$CUBI
Customers Bancorp, Inc. Stock $cubi

$cubi Overview Financials Valuation SEC Filings Company Website

2024 Q4 Form 10-Q Financial Statement

#000148881324000097 Filed on November 12, 2024

Income Statement

Concept	2024 Q4	2024 Q3
Revenue		$332.1M
YoY Change		-11.75%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development		$13.59M
YoY Change		-13.27%
% of Gross Profit
Depreciation & Amortization		$9.749M
YoY Change		28.28%
% of Gross Profit
Operating Expenses		$13.59M
YoY Change		-13.27%
Operating Profit
YoY Change
Interest Expense
YoY Change
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income		$46.02M
YoY Change		-58.25%
Income Tax		-$725.0K
% Of Pretax Income		-1.58%
Net Earnings		$42.94M
YoY Change		-50.51%
Net Earnings / Revenue		12.93%
Basic Earnings Per Share		$1.36
Diluted Earnings Per Share		$1.31
COMMON SHARES
Basic Shares Outstanding	31.35M shares	31.70M shares
Diluted Shares Outstanding		32.77M shares

Balance Sheet

Concept	2024 Q4	2024 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents		$3.088B
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment		$6.730M
YoY Change		-13.6%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets		$21.46B
YoY Change		-1.83%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable		$186.8M
YoY Change		-8.43%
Accrued Expenses		$37.99M
YoY Change		99.96%
Deferred Revenue
YoY Change
Short-Term Debt		$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities		$186.8M
YoY Change		-16.23%
LONG-TERM LIABILITIES
Long-Term Debt		$281.5M
YoY Change		-8.02%
Other Long-Term Liabilities
YoY Change
Total Long-Term Liabilities		$281.5M
YoY Change		-18.88%
TOTAL LIABILITIES
Total Short-Term Liabilities		$186.8M
Total Long-Term Liabilities		$281.5M
Total Liabilities		$19.65B
YoY Change		-3.16%
SHAREHOLDERS EQUITY
Retained Earnings		$1.303B
YoY Change		18.29%
Common Stock		$35.73M
YoY Change		1.14%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity		$1.801B
YoY Change
Total Liabilities & Shareholders Equity		$21.46B
YoY Change		-1.83%

Cashflow Statement

Concept	2024 Q4	2024 Q3
OPERATING ACTIVITIES
Net Income		$42.94M
YoY Change		-50.51%
Depreciation, Depletion And Amortization		$9.749M
YoY Change		28.28%
Cash From Operating Activities		$24.40M
YoY Change		-82.07%
INVESTING ACTIVITIES
Capital Expenditures		$11.95M
YoY Change		106.1%
Acquisitions
YoY Change
Other Investing Activities		-$374.8M
YoY Change		-193.01%
Cash From Investing Activities		-$386.7M
YoY Change		-197.38%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities		401.7M
YoY Change		-249.68%
NET CHANGE
Cash From Operating Activities		24.40M
Cash From Investing Activities		-386.7M
Cash From Financing Activities		401.7M
Net Change In Cash		39.44M
YoY Change		-85.11%
FREE CASH FLOW
Cash From Operating Activities		$24.40M
Capital Expenditures		$11.95M
Free Cash Flow		$12.44M
YoY Change		-90.45%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Amendment Flag AmendmentFlag	false
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2024
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Entity Central Index Key EntityCentralIndexKey	0001488813
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Entity File Number EntityFileNumber	001-35542
	dei	Entity Registrant Name EntityRegistrantName	Customers Bancorp, Inc.
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	PA
CY2024Q3	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	5700000	shares
CY2024Q3	us-gaap	Interest And Fee Income Loans And Leases Held For Sale InterestAndFeeIncomeLoansAndLeasesHeldForSale	10907000	usd
CY2023Q3	us-gaap	Interest And Fee Income Loans And Leases Held For Sale InterestAndFeeIncomeLoansAndLeasesHeldForSale	4664000	usd
	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	7031000	usd
	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	5463000	usd
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	997928000	usd
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	1021445000	usd
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	458338000	usd
	us-gaap	Interest Expense Deposits InterestExpenseDeposits	426130000	usd
	cubi	Interest Expense Federal Home Loan Bank Advances Short Term InterestExpenseFederalHomeLoanBankAdvancesShortTerm	39512000	usd
	cubi	Interest Expense Federal Home Loan Bank Advances Short Term InterestExpenseFederalHomeLoanBankAdvancesShortTerm	61140000	usd
	cubi	Interest Expense Federal Reserve Bank Advances Short Term InterestExpenseFederalReserveBankAdvancesShortTerm	0	usd
	cubi	Interest Expense Federal Reserve Bank Advances Short Term InterestExpenseFederalReserveBankAdvancesShortTerm	6286000	usd
	us-gaap	Interest Expense Subordinated Notes And Debentures InterestExpenseSubordinatedNotesAndDebentures	8960000	usd
	us-gaap	Interest Expense Subordinated Notes And Debentures InterestExpenseSubordinatedNotesAndDebentures	8067000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	514943000	usd
	cubi	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal Including Portion Of Available For Sale Securities FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversalIncludingPortionOfAvailableForSaleSecurities	52257000	usd
	cubi	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal Including Portion Of Available For Sale Securities FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversalIncludingPortionOfAvailableForSaleSecurities	61088000	usd
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	434326000	usd
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	453855000	usd
	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	30058000	usd
	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	27144000	usd
	cubi	Income From Loan Fees IncomeFromLoanFees	18524000	usd
	cubi	Income From Loan Fees IncomeFromLoanFees	14290000	usd
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	7317000	usd
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	9617000	usd
	cubi	Fees Mortgage Warehouse Lending FeesMortgageWarehouseLending	3091000	usd
	cubi	Fees Mortgage Warehouse Lending FeesMortgageWarehouseLending	3468000	usd
	cubi	Gain Loss On Sale Of Mortgages And Other Loans GainLossOnSaleOfMortgagesAndOtherLoans	-14776000	usd
	cubi	Gain Loss On Sale Of Mortgages And Other Loans GainLossOnSaleOfMortgagesAndOtherLoans	-1109000	usd
	cubi	Gain Loss On Sale Of Capital Call Lines Of Credit GainLossOnSaleOfCapitalCallLinesOfCredit	0	usd
	cubi	Gain Loss On Sale Of Capital Call Lines Of Credit GainLossOnSaleOfCapitalCallLinesOfCredit	-5037000	usd
	us-gaap	Debt Securities Realized Gain Loss DebtSecuritiesRealizedGainLoss	-749000	usd
	us-gaap	Debt Securities Realized Gain Loss DebtSecuritiesRealizedGainLoss	-429000	usd
CY2024Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	1865000	usd
CY2023Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	631000	usd
CY2024Q3	us-gaap	Noninterest Income NoninterestIncome	8557000	usd
CY2023Q3	us-gaap	Noninterest Income NoninterestIncome	17775000	usd
CY2024Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	47717000	usd
CY2023Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	33845000	usd
CY2023Q3	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	15667000	usd
CY2024Q3	cubi	Operating Leases Commercial Lease Depreciation OperatingLeasesCommercialLeaseDepreciation	7811000	usd
CY2023Q3	cubi	Operating Leases Commercial Lease Depreciation OperatingLeasesCommercialLeaseDepreciation	7338000	usd
CY2024Q3	us-gaap	Professional Fees ProfessionalFees	9048000	usd
CY2023Q3	us-gaap	Professional Fees ProfessionalFees	8569000	usd
CY2024Q3	us-gaap	Loan Processing Fee LoanProcessingFee	3778000	usd
CY2023Q3	us-gaap	Loan Processing Fee LoanProcessingFee	3858000	usd
CY2024Q3	us-gaap	Occupancy Net OccupancyNet	2987000	usd
CY2023Q3	us-gaap	Occupancy Net OccupancyNet	2471000	usd
CY2023Q3	cubi	Fdic Assessments Taxes And Regulatory Fees FdicAssessmentsTaxesAndRegulatoryFees	8551000	usd
CY2024Q3	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	908000	usd
CY2023Q3	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	650000	usd
CY2024Q3	us-gaap	Stockholders Equity StockholdersEquity	1801180000	usd
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	27-2290659
	dei	Entity Address Address Line1 EntityAddressAddressLine1	701 Reading Avenue
	dei	Entity Address City Or Town EntityAddressCityOrTown	West Reading
	dei	Entity Address State Or Province EntityAddressStateOrProvince	PA
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	19611
	dei	City Area Code CityAreaCode	610
	dei	Local Phone Number LocalPhoneNumber	933-2000
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
CY2024Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	31349258	shares
CY2024Q3	us-gaap	Cash And Due From Banks CashAndDueFromBanks	39429000	usd
CY2023Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	45210000	usd
CY2024Q3	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	3048593000	usd
CY2023Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	3801136000	usd
CY2024Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	3088022000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	3846346000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	4639000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	3952000	usd
CY2024Q3	cubi	Investment Securitiesat Fair Value InvestmentSecuritiesatFairValue	2412069000	usd
CY2023Q4	cubi	Investment Securitiesat Fair Value InvestmentSecuritiesatFairValue	2405640000	usd
CY2024Q3	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	1064437000	usd
CY2023Q4	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	1103170000	usd
CY2024Q3	us-gaap	Loans Held For Sale Fair Value Disclosure LoansHeldForSaleFairValueDisclosure	219621000	usd
CY2023Q4	us-gaap	Loans Held For Sale Fair Value Disclosure LoansHeldForSaleFairValueDisclosure	189277000	usd
CY2024Q3	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	275420000	usd
CY2023Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	340317000	usd
	us-gaap	Interest And Fee Income Loans And Leases Held In Portfolio InterestAndFeeIncomeLoansAndLeasesHeldInPortfolio	670923000	usd
	us-gaap	Interest And Fee Income Loans And Leases Held In Portfolio InterestAndFeeIncomeLoansAndLeasesHeldInPortfolio	757064000	usd
	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	140653000	usd
	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	149585000	usd
	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	142695000	usd
	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	81819000	usd
	us-gaap	Interest And Fee Income Loans And Leases Held For Sale InterestAndFeeIncomeLoansAndLeasesHeldForSale	36626000	usd
	us-gaap	Interest And Fee Income Loans And Leases Held For Sale InterestAndFeeIncomeLoansAndLeasesHeldForSale	27514000	usd
	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	4879000	usd
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	3949000	usd
	us-gaap	Noninterest Income NoninterestIncome	60825000	usd
	us-gaap	Noninterest Income NoninterestIncome	51893000	usd
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	128689000	usd
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	99310000	usd
	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	51719000	usd
	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	48663000	usd
	cubi	Operating Leases Commercial Lease Depreciation OperatingLeasesCommercialLeaseDepreciation	23610000	usd
	cubi	Operating Leases Commercial Lease Depreciation OperatingLeasesCommercialLeaseDepreciation	22541000	usd
	us-gaap	Professional Fees ProfessionalFees	21505000	usd
	us-gaap	Professional Fees ProfessionalFees	25357000	usd
	us-gaap	Loan Processing Fee LoanProcessingFee	11325000	usd
	us-gaap	Loan Processing Fee LoanProcessingFee	13296000	usd
	us-gaap	Occupancy Net OccupancyNet	8454000	usd
	cubi	Fdic Assessments Taxes And Regulatory Fees FdicAssessmentsTaxesAndRegulatoryFees	31607000	usd
	cubi	Fdic Assessments Taxes And Regulatory Fees FdicAssessmentsTaxesAndRegulatoryFees	21059000	usd
	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	2844000	usd
	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	2245000	usd
	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	0	usd
	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	-4096000	usd
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	26886000	usd
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	14579000	usd
	us-gaap	Noninterest Expense NoninterestExpense	306639000	usd
	us-gaap	Noninterest Expense NoninterestExpense	258896000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	188512000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	246852000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	33958000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	58801000	usd
	us-gaap	Net Income Loss NetIncomeLoss	154554000	usd
	us-gaap	Net Income Loss NetIncomeLoss	188051000	usd
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	11391000	usd
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	10826000	usd
CY2023Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	82953000	usd
CY2023Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	82953000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	143163000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	143163000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	177225000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	177225000	usd
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.63
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.37
	us-gaap	Net Income Loss NetIncomeLoss	154554000	usd
	us-gaap	Net Income Loss NetIncomeLoss	188051000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	36439000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	14535000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	9351000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	3692000	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-749000	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	429000	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	-193000	usd
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	109000	usd
	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss Before Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossBeforeTax	-3821000	usd
	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss Before Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossBeforeTax	-3700000	usd
	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossTax	-978000	usd
	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossTax	-939000	usd
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	30487000	usd
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	13284000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	30487000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	13284000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	185041000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	201335000	usd
	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	154554000	usd
	cubi	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal Including Portion Of Available For Sale Securities FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversalIncludingPortionOfAvailableForSaleSecurities	52257000	usd
	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	24458000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	10722000	usd
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-697000	usd
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	3281000	usd
	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	324000	usd
	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	-749000	usd
	cubi	Purchases Of Investment Securities Held To Maturity Upon Sale Of Consumer Installment Loans PurchasesOfInvestmentSecuritiesHeldToMaturityUponSaleOfConsumerInstallmentLoans	160029000	usd
	us-gaap	Transfer Of Loans Held For Sale To Portfolio Loans1 TransferOfLoansHeldForSaleToPortfolioLoans1	5210000	usd
CY2023Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	82953000	usd
CY2023Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	82953000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	143163000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	143163000	usd
CY2024Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	31567797	shares
CY2023Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	31290581	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	31563660	shares
CY2024Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1198691	shares
CY2023Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	884503	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1209705	shares
CY2023Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	32175084	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	32773365	shares
CY2024Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.36
CY2023Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.65
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.54
CY2024Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.31
CY2023Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.58
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.37
CY2024Q3	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	1612000	usd
CY2023Q3	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	1568000	usd
	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	4535000	usd
CY2024Q3	us-gaap	Net Income Loss NetIncomeLoss	46743000	usd
CY2024Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	42937000	usd
CY2024Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	42937000	usd
CY2024Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.36
CY2023Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.65
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.54
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.53
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	86756000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	32810000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	23666000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	8432000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	6011000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	0	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	457970000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	228503000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	217338000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	175896000	usd
	cubi	Loans Heldforinvestment Purchase Priceasa Percentageof Loans Outstanding LoansHeldforinvestmentPurchasePriceasaPercentageofLoansOutstanding	0.877
	us-gaap	Gain Loss On Sale Of Notes Receivable GainLossOnSaleOfNotesReceivable	-200000	usd
	us-gaap	Gain Loss On Sale Of Notes Receivable GainLossOnSaleOfNotesReceivable	200000	usd
CY2024Q3	cubi	Financing Receivable Excluding Accrued Interest Including Paycheck Protection Program Receivables Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestIncludingPaycheckProtectionProgramReceivablesBeforeAllowanceForCreditLoss	12527283000	usd
CY2023Q4	cubi	Financing Receivable Excluding Accrued Interest Including Paycheck Protection Program Receivables Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestIncludingPaycheckProtectionProgramReceivablesBeforeAllowanceForCreditLoss	11963855000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	135311000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	13644538000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	12726456000	usd
CY2024Q3	us-gaap	Federal Home Loan Bank Stock And Federal Reserve Bank Stock FederalHomeLoanBankStockAndFederalReserveBankStock	95035000	usd
CY2024Q3	us-gaap	Interest Receivable InterestReceivable	115588000	usd
CY2023Q4	us-gaap	Interest Receivable InterestReceivable	114766000	usd
CY2024Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	6730000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	7371000	usd
CY2024Q3	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	295531000	usd
CY2023Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	292193000	usd
CY2024Q3	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	3629000	usd
CY2023Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	3629000	usd
CY2024Q3	us-gaap	Other Assets OtherAssets	455083000	usd
CY2023Q4	us-gaap	Other Assets OtherAssets	366829000	usd
CY2024Q3	us-gaap	Assets Assets	21456082000	usd
CY2023Q4	us-gaap	Assets Assets	21316265000	usd
CY2023Q4	us-gaap	Noninterest Bearing Domestic Deposit Demand NoninterestBearingDomesticDepositDemand	4422494000	usd
CY2024Q3	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	13398580000	usd
CY2023Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	13497742000	usd
CY2024Q3	us-gaap	Deposits Deposits	18069389000	usd
CY2023Q4	us-gaap	Deposits Deposits	17920236000	usd
CY2024Q3	us-gaap	Federal Home Loan Bank Advances Branch Of Fhlb Bank Amount Of Advances By Branch FederalHomeLoanBankAdvancesBranchOfFHLBBankAmountOfAdvancesByBranch	1117229000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Branch Of Fhlb Bank Amount Of Advances By Branch FederalHomeLoanBankAdvancesBranchOfFHLBBankAmountOfAdvancesByBranch	1203207000	usd
CY2024Q3	us-gaap	Other Borrowings OtherBorrowings	99033000	usd
CY2023Q4	us-gaap	Other Borrowings OtherBorrowings	123840000	usd
CY2024Q3	us-gaap	Subordinated Debt SubordinatedDebt	182439000	usd
CY2023Q4	us-gaap	Subordinated Debt SubordinatedDebt	182230000	usd
CY2024Q3	us-gaap	Accounts Payable And Other Accrued Liabilities AccountsPayableAndOtherAccruedLiabilities	186812000	usd
CY2023Q4	us-gaap	Accounts Payable And Other Accrued Liabilities AccountsPayableAndOtherAccruedLiabilities	248358000	usd
CY2024Q3	us-gaap	Liabilities Liabilities	19654902000	usd
CY2023Q4	us-gaap	Liabilities Liabilities	19677871000	usd
CY2024Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2023Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2023Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	1.00
CY2024Q3	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	1.00
CY2023Q4	us-gaap	Preferred Stock Liquidation Preference PreferredStockLiquidationPreference	25.00
CY2024Q3	us-gaap	Preferred Stock Liquidation Preference PreferredStockLiquidationPreference	25.00
CY2023Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	100000000	shares
CY2024Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	100000000	shares
CY2023Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	5700000	shares
CY2023Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	5700000	shares
CY2024Q3	us-gaap	Preferred Stock Value PreferredStockValue	137794000	usd
CY2023Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1.00
CY2024Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1.00
CY2024Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	200000000	shares
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	200000000	shares
CY2024Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	35734517	shares
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	35459342	shares
CY2024Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	31342107	shares
CY2024Q3	us-gaap	Common Stock Value CommonStockValue	35734000	usd
CY2023Q4	us-gaap	Common Stock Value CommonStockValue	35459000	usd
CY2024Q3	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	571609000	usd
CY2023Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	564538000	usd
CY2024Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1302745000	usd
CY2023Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1159582000	usd
CY2024Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-106082000	usd
CY2024Q3	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	4392410	shares
CY2023Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	4018436	shares
CY2024Q3	us-gaap	Treasury Stock Common Value TreasuryStockCommonValue	140620000	usd
CY2023Q4	us-gaap	Treasury Stock Common Value TreasuryStockCommonValue	122410000	usd
CY2024Q3	us-gaap	Stockholders Equity StockholdersEquity	1801180000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	1638394000	usd
CY2024Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	21456082000	usd
CY2023Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	21316265000	usd
CY2024Q3	us-gaap	Interest And Fee Income Loans And Leases Held In Portfolio InterestAndFeeIncomeLoansAndLeasesHeldInPortfolio	228659000	usd
CY2023Q3	us-gaap	Interest And Fee Income Loans And Leases Held In Portfolio InterestAndFeeIncomeLoansAndLeasesHeldInPortfolio	271107000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	133158000	usd
CY2024Q3	us-gaap	Noninterest Bearing Domestic Deposit Demand NoninterestBearingDomesticDepositDemand	4670809000	usd
CY2024Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	5700000	shares
CY2023Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	31440906	shares
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-136569000	usd
CY2024Q3	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	46265000	usd
CY2023Q3	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	54243000	usd
CY2024Q3	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	44372000	usd
CY2023Q3	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	43800000	usd
CY2024Q3	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	1910000	usd
CY2023Q3	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	2526000	usd
CY2023Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	376340000	usd
CY2024Q3	us-gaap	Interest Expense Deposits InterestExpenseDeposits	155829000	usd
CY2023Q3	us-gaap	Interest Expense Deposits InterestExpenseDeposits	145825000	usd
CY2024Q3	cubi	Interest Expense Federal Home Loan Bank Advances Short Term InterestExpenseFederalHomeLoanBankAdvancesShortTerm	12590000	usd
CY2023Q3	cubi	Interest Expense Federal Home Loan Bank Advances Short Term InterestExpenseFederalHomeLoanBankAdvancesShortTerm	26485000	usd
CY2024Q3	cubi	Interest Expense Federal Reserve Bank Advances Short Term InterestExpenseFederalReserveBankAdvancesShortTerm	0	usd
CY2023Q3	cubi	Interest Expense Federal Reserve Bank Advances Short Term InterestExpenseFederalReserveBankAdvancesShortTerm	0	usd
CY2024Q3	us-gaap	Interest Expense Subordinated Notes And Debentures InterestExpenseSubordinatedNotesAndDebentures	3537000	usd
CY2023Q3	us-gaap	Interest Expense Subordinated Notes And Debentures InterestExpenseSubordinatedNotesAndDebentures	2689000	usd
CY2023Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	199773000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	486583000	usd
CY2024Q3	cubi	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal Including Portion Of Available For Sale Securities FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversalIncludingPortionOfAvailableForSaleSecurities	17066000	usd
CY2023Q3	cubi	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal Including Portion Of Available For Sale Securities FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversalIncludingPortionOfAvailableForSaleSecurities	17856000	usd
CY2024Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	141479000	usd
CY2023Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	181917000	usd
CY2024Q3	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	10093000	usd
CY2023Q3	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	8901000	usd
CY2024Q3	cubi	Income From Loan Fees IncomeFromLoanFees	8011000	usd
CY2023Q3	cubi	Income From Loan Fees IncomeFromLoanFees	6029000	usd
CY2024Q3	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2049000	usd
CY2023Q3	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	1973000	usd
CY2024Q3	cubi	Fees Mortgage Warehouse Lending FeesMortgageWarehouseLending	1087000	usd
CY2023Q3	cubi	Fees Mortgage Warehouse Lending FeesMortgageWarehouseLending	1018000	usd
CY2024Q3	cubi	Gain Loss On Sale Of Mortgages And Other Loans GainLossOnSaleOfMortgagesAndOtherLoans	-14548000	usd
CY2023Q3	cubi	Gain Loss On Sale Of Mortgages And Other Loans GainLossOnSaleOfMortgagesAndOtherLoans	-348000	usd
CY2024Q3	cubi	Gain Loss On Sale Of Capital Call Lines Of Credit GainLossOnSaleOfCapitalCallLinesOfCredit	0	usd
CY2023Q3	cubi	Gain Loss On Sale Of Capital Call Lines Of Credit GainLossOnSaleOfCapitalCallLinesOfCredit	0	usd
CY2024Q3	us-gaap	Debt Securities Realized Gain Loss DebtSecuritiesRealizedGainLoss	0	usd
CY2023Q3	us-gaap	Debt Securities Realized Gain Loss DebtSecuritiesRealizedGainLoss	-429000	usd
CY2024Q3	us-gaap	Equity Securities Fv Ni Unrealized Gain EquitySecuritiesFvNiUnrealizedGain	0	usd
CY2023Q3	us-gaap	Equity Securities Fv Ni Unrealized Gain EquitySecuritiesFvNiUnrealizedGain	0	usd
	us-gaap	Equity Securities Fv Ni Unrealized Gain EquitySecuritiesFvNiUnrealizedGain	11041000	usd
	us-gaap	Equity Securities Fv Ni Unrealized Gain EquitySecuritiesFvNiUnrealizedGain	0	usd
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	6319000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	30487000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	13284000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	2488717000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	4639000	usd
CY2024Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	9314000	usd
CY2024Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	115659000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	2377733000	usd
CY2024Q3	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	34336000	usd
CY2024Q3	cubi	Investment Securitiesat Fair Value InvestmentSecuritiesatFairValue	2412069000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	2524663000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	3952000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	1296000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	145147000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	2376860000	usd
CY2023Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	28780000	usd
CY2023Q4	cubi	Investment Securitiesat Fair Value InvestmentSecuritiesatFairValue	2405640000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss	19400000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss	14700000	usd
CY2024Q3	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	100000	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	240800000	usd
CY2023Q3	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	4100000	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	4100000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	0	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	0	usd
	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	176000	usd
	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	0	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	0	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	429000	usd
	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	925000	usd
	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	429000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	0	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	-429000	usd
	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	-749000	usd
	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	-429000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	41523000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	29940000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	531379000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	484726000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	87724000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	80305000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Amortized Cost Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestBeforeAllowanceForCreditLoss	2488717000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	2377733000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	317303000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	5035000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	1374196000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	75097000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	1691499000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	80132000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	356234000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	12782000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	1778899000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	116764000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	2135133000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	129546000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions	21	security
CY2024Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	92	security
CY2024Q3	cubi	Number Of Asset Backed Securities With Deterioration In Future Estimated Cash Flows NumberOfAssetBackedSecuritiesWithDeteriorationInFutureEstimatedCashFlows	2	security
	cubi	Number Of Asset Backed Securities With Deterioration In Future Estimated Cash Flows NumberOfAssetBackedSecuritiesWithDeteriorationInFutureEstimatedCashFlows	2	security
CY2024Q3	cubi	Number Of Corporate Notes With Deterioration In Future Estimated Cash Flows NumberOfCorporateNotesWithDeteriorationInFutureEstimatedCashFlows	20	security
	cubi	Number Of Corporate Notes With Deterioration In Future Estimated Cash Flows NumberOfCorporateNotesWithDeteriorationInFutureEstimatedCashFlows	20	security
CY2024Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	113	security
CY2024Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	113	security
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	119	security
CY2024Q3	cubi	Number Of Asset Backed Securities With Deterioration In Future Estimated Cash Flows NumberOfAssetBackedSecuritiesWithDeteriorationInFutureEstimatedCashFlows	2	security
	cubi	Number Of Asset Backed Securities With Deterioration In Future Estimated Cash Flows NumberOfAssetBackedSecuritiesWithDeteriorationInFutureEstimatedCashFlows	2	security
CY2024Q3	cubi	Number Of Corporate Notes With Deterioration In Future Estimated Cash Flows NumberOfCorporateNotesWithDeteriorationInFutureEstimatedCashFlows	20	security
	cubi	Number Of Corporate Notes With Deterioration In Future Estimated Cash Flows NumberOfCorporateNotesWithDeteriorationInFutureEstimatedCashFlows	20	security
	cubi	Number Of Asset Backed Securities With Deterioration In Future Estimated Cash Flows NumberOfAssetBackedSecuritiesWithDeteriorationInFutureEstimatedCashFlows	4	security
CY2023Q3	cubi	Number Of Asset Backed Securities With Deterioration In Future Estimated Cash Flows NumberOfAssetBackedSecuritiesWithDeteriorationInFutureEstimatedCashFlows	4	security
CY2023Q3	cubi	Number Of Corporate Notes With Deterioration In Future Estimated Cash Flows NumberOfCorporateNotesWithDeteriorationInFutureEstimatedCashFlows	12	security
	cubi	Number Of Corporate Notes With Deterioration In Future Estimated Cash Flows NumberOfCorporateNotesWithDeteriorationInFutureEstimatedCashFlows	12	security
CY2024Q2	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	5339000	usd
CY2023Q2	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	3439000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Not Previously Recorded DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossNotPreviouslyRecorded	24000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Not Previously Recorded DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossNotPreviouslyRecorded	564000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Not To Sell Before Recovery Credit Loss Previously Recorded Expense Reversal DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossNotToSellBeforeRecoveryCreditLossPreviouslyRecordedExpenseReversal	12000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Not To Sell Before Recovery Credit Loss Previously Recorded Expense Reversal DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossNotToSellBeforeRecoveryCreditLossPreviouslyRecordedExpenseReversal	511000	usd
CY2024Q3	cubi	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Decrease On Previously Impaired Securities DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossDecreaseOnPreviouslyImpairedSecurities	736000	usd
CY2023Q3	cubi	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Decrease On Previously Impaired Securities DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossDecreaseOnPreviouslyImpairedSecurities	274000	usd
CY2024Q3	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2024#OtherAssets
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2024#OtherAssets
CY2024Q3	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2024#OtherLiabilities
CY2023Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2024#OtherLiabilities
	dei	Document Period End Date DocumentPeriodEndDate	2024-09-30
CY2024Q3	cubi	Loans Receivable Mortgage Warehouse LoansReceivableMortgageWarehouse	1250413000	usd
CY2023Q4	cubi	Loans Receivable Mortgage Warehouse LoansReceivableMortgageWarehouse	897912000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Stock And Federal Reserve Bank Stock FederalHomeLoanBankStockAndFederalReserveBankStock	109548000	usd
CY2023Q4	us-gaap	Preferred Stock Value PreferredStockValue	137794000	usd
CY2024Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	332113000	usd
CY2024Q3	us-gaap	Interest Expense Operating InterestExpenseOperating	173568000	usd
CY2023Q3	us-gaap	Interest Expense Operating InterestExpenseOperating	176567000	usd
	us-gaap	Interest Expense Operating InterestExpenseOperating	511345000	usd
	us-gaap	Interest Expense Operating InterestExpenseOperating	506502000	usd
CY2024Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	158545000	usd
CY2024Q3	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	13588000	usd
	us-gaap	Occupancy Net OccupancyNet	7750000	usd
CY2024Q3	cubi	Fdic Assessments Taxes And Regulatory Fees FdicAssessmentsTaxesAndRegulatoryFees	7902000	usd
CY2024Q3	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	0	usd
CY2023Q3	us-gaap	Gain Loss Related To Litigation Settlement GainLossRelatedToLitigationSettlement	-4096000	usd
CY2024Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	10279000	usd
CY2023Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	4421000	usd
CY2024Q3	us-gaap	Noninterest Expense NoninterestExpense	104018000	usd
CY2023Q3	us-gaap	Noninterest Expense NoninterestExpense	89466000	usd
CY2024Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	46018000	usd
CY2023Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	110226000	usd
CY2024Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-725000	usd
CY2023Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	23470000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	86756000	usd
CY2024Q3	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	3806000	usd
CY2023Q3	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	3803000	usd
CY2024Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.31
CY2023Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.58
CY2024Q3	us-gaap	Net Income Loss NetIncomeLoss	46743000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	429000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	0	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	109000	usd
CY2024Q3	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss Before Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossBeforeTax	-1209000	usd
CY2023Q3	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss Before Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossBeforeTax	-1379000	usd
CY2024Q3	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossTax	-311000	usd
CY2023Q3	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossTax	-350000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	25276000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	18364000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	25276000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	18364000	usd
CY2024Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	72019000	usd
CY2023Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	105120000	usd
CY2024Q2	us-gaap	Stockholders Equity StockholdersEquity	1746865000	usd
CY2024Q3	us-gaap	Net Income Loss NetIncomeLoss	46743000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	25276000	usd
CY2024Q3	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3806000	usd
CY2024Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3739000	usd
CY2024Q3	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	573000	usd
CY2024Q3	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	18210000	usd
CY2023Q2	us-gaap	Stockholders Equity StockholdersEquity	1456652000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	86756000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	18364000	usd
CY2023Q3	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3803000	usd
CY2023Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3510000	usd
CY2023Q3	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	128000	usd
CY2023Q3	us-gaap	Stockholders Equity StockholdersEquity	1561607000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	1638394000	usd
	us-gaap	Net Income Loss NetIncomeLoss	154554000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	30487000	usd
	us-gaap	Dividends Preferred Stock DividendsPreferredStock	11391000	usd
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	10985000	usd
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-3639000	usd
	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	18210000	usd
CY2024Q3	us-gaap	Stockholders Equity StockholdersEquity	1801180000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	1402961000	usd
	us-gaap	Net Income Loss NetIncomeLoss	188051000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	13284000	usd
	us-gaap	Dividends Preferred Stock DividendsPreferredStock	10826000	usd
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	9979000	usd
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-2036000	usd
	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	39806000	usd
CY2023Q3	us-gaap	Stockholders Equity StockholdersEquity	1561607000	usd
	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	188051000	usd
	cubi	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal Including Portion Of Available For Sale Securities FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversalIncludingPortionOfAvailableForSaleSecurities	61088000	usd
	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	24226000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	10048000	usd
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	21999000	usd
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	8859000	usd
	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	-197000	usd
	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	-429000	usd
	us-gaap	Equity Securities Fv Ni Unrealized Gain EquitySecuritiesFvNiUnrealizedGain	11041000	usd
	us-gaap	Equity Securities Fv Ni Unrealized Gain EquitySecuritiesFvNiUnrealizedGain	0	usd
	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	usd
	us-gaap	Asset Impairment Charges AssetImpairmentCharges	124000	usd
	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	1089000	usd
	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	344000	usd
	cubi	Gain Loss On Settlement Of Cash Flow Hedges GainLossOnSettlementOfCashFlowHedges	0	usd
	cubi	Gain Loss On Settlement Of Cash Flow Hedges GainLossOnSettlementOfCashFlowHedges	-4630000	usd
	us-gaap	Gain Loss On Sale Of Leased Assets Net Operating Leases GainLossOnSaleOfLeasedAssetsNetOperatingLeases	1693000	usd
	us-gaap	Gain Loss On Sale Of Leased Assets Net Operating Leases GainLossOnSaleOfLeasedAssetsNetOperatingLeases	-439000	usd
	cubi	Gain Loss On Fair Value Adjustment On Loans Held For Sale GainLossOnFairValueAdjustmentOnLoansHeldForSale	-607000	usd
	cubi	Gain Loss On Fair Value Adjustment On Loans Held For Sale GainLossOnFairValueAdjustmentOnLoansHeldForSale	0	usd
	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	-14776000	usd
	us-gaap	Gain Loss On Sale Of Mortgage Loans GainLossOnSaleOfMortgageLoans	-869000	usd
	cubi	Gain Loss On Sale Of Capital Call Lines Of Credit GainLossOnSaleOfCapitalCallLinesOfCredit	0	usd
	cubi	Gain Loss On Sale Of Capital Call Lines Of Credit GainLossOnSaleOfCapitalCallLinesOfCredit	-5037000	usd
	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	1034072000	usd
	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	470318000	usd
	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	952271000	usd
	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	454867000	usd
	cubi	Accretion Of Fair Values Discounts Net AccretionOfFairValuesDiscountsNet	-21580000	usd
	cubi	Accretion Of Fair Values Discounts Net AccretionOfFairValuesDiscountsNet	-74016000	usd
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	7317000	usd
	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	9617000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	56371000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-917000	usd
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-61274000	usd
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	33339000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	11655000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	243106000	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	240847000	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	4075000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	665800000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	0	usd
	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	14844000	usd
	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	73074000	usd
	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	5000000	usd
	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	0	usd
	cubi	Origination Of Mortgage Finance Loans OriginationOfMortgageFinanceLoans	16495064000	usd
	cubi	Origination Of Mortgage Finance Loans OriginationOfMortgageFinanceLoans	15385554000	usd
	cubi	Proceeds From Payoffs Of Mortgage Finance Loans ProceedsFromPayoffsOfMortgageFinanceLoans	16141964000	usd
	cubi	Proceeds From Payoffs Of Mortgage Finance Loans ProceedsFromPayoffsOfMortgageFinanceLoans	15766489000	usd
	us-gaap	Payments For Proceeds From Other Loans And Leases PaymentsForProceedsFromOtherLoansAndLeases	538621000	usd
	us-gaap	Payments For Proceeds From Other Loans And Leases PaymentsForProceedsFromOtherLoansAndLeases	-1586922000	usd
	us-gaap	Proceeds From Sale Of Finance Receivables ProceedsFromSaleOfFinanceReceivables	34426000	usd
	us-gaap	Proceeds From Sale Of Finance Receivables ProceedsFromSaleOfFinanceReceivables	409503000	usd
	us-gaap	Payments To Acquire Finance Receivables PaymentsToAcquireFinanceReceivables	121222000	usd
	us-gaap	Payments To Acquire Finance Receivables PaymentsToAcquireFinanceReceivables	702409000	usd
	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	5110000	usd
	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	56645000	usd
	us-gaap	Proceeds From Sale Of Other Investments ProceedsFromSaleOfOtherInvestments	15508000	usd
	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	51667000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	992000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	521000	usd
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	usd
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	73000	usd
	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	79000	usd
	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	33000	usd
	us-gaap	Proceeds From Sale Of Lease Receivables ProceedsFromSaleOfLeaseReceivables	14576000	usd
	us-gaap	Proceeds From Sale Of Lease Receivables ProceedsFromSaleOfLeaseReceivables	2515000	usd
	us-gaap	Payments To Acquire Equipment On Lease PaymentsToAcquireEquipmentOnLease	31299000	usd
	us-gaap	Payments To Acquire Equipment On Lease PaymentsToAcquireEquipmentOnLease	20257000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-745024000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	1997172000	usd
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	128395000	usd
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	36624000	usd
	cubi	Proceeds From Repayments Of Short Term Debt From The Federal Home Loan Bank ProceedsFromRepaymentsOfShortTermDebtFromTheFederalHomeLoanBank	0	usd
	cubi	Proceeds From Repayments Of Short Term Debt From The Federal Home Loan Bank ProceedsFromRepaymentsOfShortTermDebtFromTheFederalHomeLoanBank	-300000000	usd
	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	155000000	usd
	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	2565000000	usd
	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	250000000	usd
	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	1525000000	usd
	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	25000000	usd
	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	0	usd
	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	11501000	usd
	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	10823000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	18210000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	39806000	usd
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	5150000	usd
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	2429000	usd
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1511000	usd
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	324000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-24955000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	723890000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-758324000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	2964168000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3846346000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	455806000	usd
CY2024Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3088022000	usd
CY2023Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3419974000	usd
	cubi	Purchases Of Investment Securities Held To Maturity Upon Sale Of Consumer Installment Loans PurchasesOfInvestmentSecuritiesHeldToMaturityUponSaleOfConsumerInstallmentLoans	436841000	usd
	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	55724000	usd
	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	309076000	usd
	us-gaap	Transfer Of Loans Held For Sale To Portfolio Loans1 TransferOfLoansHeldForSaleToPortfolioLoans1	14377000	usd
	us-gaap	Nature Of Operations NatureOfOperations	DESCRIPTION OF THE BUSINESS<div style="margin-top:9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Customers Bancorp, Inc. (“Customers Bancorp”) is a bank holding company engaged in banking activities through its wholly owned subsidiary, Customers Bank (“the Bank”), collectively referred to as “Customers” herein.</span></div><div style="margin-top:9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Customers Bancorp and its wholly owned subsidiaries, the Bank, and non-bank subsidiaries, serve businesses and residents in Berks County and Southeastern Pennsylvania (Bucks, Chester and Philadelphia Counties); New York (Westchester and Suffolk Counties, and Manhattan); Hamilton, New Jersey; Boston, Massachusetts; Providence, Rhode Island; Portsmouth, New Hampshire; Chicago, Illinois; Dallas, Texas; Wilmington, North Carolina; and nationally for certain loan and deposit products. The Bank has seven branches and provides commercial banking products, primarily loans and deposits. In addition, the Bank also administratively supports loan and other financial products, including equipment finance leases, to customers through its limited-purpose offices. The Bank also serves specialized businesses nationwide, including its mortgage finance loans, commercial equipment financing, SBA lending, specialized lending and consumer loans through relationships with fintech companies.</span></div><div style="margin-top:9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Bank is subject to regulation of the Pennsylvania Department of Banking and Securities and the Federal Reserve Bank and is periodically examined by those regulatory authorities.</span></div>
CY2024Q3	cubi	Number Of Branches NumberOfBranches	7	branch
CY2024Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	42937000	usd
CY2024Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	42937000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	177225000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	177225000	usd
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	31452700	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	583759	shares
CY2024Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	32766488	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	32036459	shares
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.63
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.53
CY2024Q3	us-gaap	Oci Before Reclassifications Before Tax Attributable To Parent OciBeforeReclassificationsBeforeTaxAttributableToParent	32810000	usd
CY2023Q3	us-gaap	Oci Before Reclassifications Before Tax Attributable To Parent OciBeforeReclassificationsBeforeTaxAttributableToParent	23666000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Loss Before Reclassifications Tax OtherComprehensiveIncomeLossBeforeReclassificationsTax	8432000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Before Reclassifications Tax OtherComprehensiveIncomeLossBeforeReclassificationsTax	6011000	usd
CY2024Q3	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	24378000	usd
CY2023Q3	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	17655000	usd
CY2024Q3	us-gaap	Reclassification From Aoci Current Period Before Tax Attributable To Parent ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent	0	usd
CY2023Q3	us-gaap	Reclassification From Aoci Current Period Before Tax Attributable To Parent ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent	429000	usd
CY2024Q3	us-gaap	Reclassification From Aoci Current Period Tax ReclassificationFromAociCurrentPeriodTax	0	usd
CY2023Q3	us-gaap	Reclassification From Aoci Current Period Tax ReclassificationFromAociCurrentPeriodTax	109000	usd
CY2024Q3	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	0	usd
CY2023Q3	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	320000	usd
CY2024Q3	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss Before Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossBeforeTax	-1209000	usd
CY2023Q3	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss Before Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossBeforeTax	-1379000	usd
CY2024Q3	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossTax	-311000	usd
CY2023Q3	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossTax	-350000	usd
CY2024Q3	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss After Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossAfterTax	-898000	usd
CY2023Q3	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss After Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossAfterTax	-1029000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	25276000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	18364000	usd
	us-gaap	Oci Before Reclassifications Before Tax Attributable To Parent OciBeforeReclassificationsBeforeTaxAttributableToParent	36439000	usd
	us-gaap	Oci Before Reclassifications Before Tax Attributable To Parent OciBeforeReclassificationsBeforeTaxAttributableToParent	14535000	usd
	us-gaap	Other Comprehensive Income Loss Before Reclassifications Tax OtherComprehensiveIncomeLossBeforeReclassificationsTax	9351000	usd
	us-gaap	Other Comprehensive Income Loss Before Reclassifications Tax OtherComprehensiveIncomeLossBeforeReclassificationsTax	3692000	usd
	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	27088000	usd
	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	10843000	usd
	us-gaap	Reclassification From Aoci Current Period Before Tax Attributable To Parent ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent	-749000	usd
	us-gaap	Reclassification From Aoci Current Period Before Tax Attributable To Parent ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent	429000	usd
	us-gaap	Reclassification From Aoci Current Period Tax ReclassificationFromAociCurrentPeriodTax	-193000	usd
	us-gaap	Reclassification From Aoci Current Period Tax ReclassificationFromAociCurrentPeriodTax	109000	usd
	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	-556000	usd
	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	320000	usd
	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss Before Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossBeforeTax	-3821000	usd
	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss Before Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossBeforeTax	-3700000	usd
	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossTax	-978000	usd
	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossTax	-939000	usd
	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss After Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossAfterTax	-2843000	usd
	us-gaap	Oci Debt Securities Available For Sale Transfer To Held To Maturity Adjustment From Aoci For Amortization Of Gain Loss After Tax OciDebtSecuritiesAvailableForSaleTransferToHeldToMaturityAdjustmentFromAociForAmortizationOfGainLossAfterTax	-2761000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Securities Sold DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossSecuritiesSold	0	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Securities Sold DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossSecuritiesSold	391000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	4639000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	3849000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	3952000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	578000	usd
	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Not Previously Recorded DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossNotPreviouslyRecorded	659000	usd
	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Not Previously Recorded DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossNotPreviouslyRecorded	2485000	usd
	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Not To Sell Before Recovery Credit Loss Previously Recorded Expense Reversal DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossNotToSellBeforeRecoveryCreditLossPreviouslyRecordedExpenseReversal	613000	usd
	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Not To Sell Before Recovery Credit Loss Previously Recorded Expense Reversal DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossNotToSellBeforeRecoveryCreditLossPreviouslyRecordedExpenseReversal	1488000	usd
	cubi	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Decrease On Previously Impaired Securities DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossDecreaseOnPreviouslyImpairedSecurities	585000	usd
	cubi	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Decrease On Previously Impaired Securities DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossDecreaseOnPreviouslyImpairedSecurities	311000	usd
	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Securities Sold DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossSecuritiesSold	0	usd
	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest Allowance For Credit Loss Securities Sold DebtSecuritiesAvailableForSaleExcludingAccruedInterestAllowanceForCreditLossSecuritiesSold	391000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	4639000	usd
CY2023Q3	us-gaap	Debt Securities Available For Sale Amortized Cost Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest	3849000	usd
CY2024Q3	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	1064437000	usd
CY2024Q3	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2024Q3	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss	1064437000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	2417000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	39340000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	1027514000	usd
CY2023Q4	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	1103170000	usd
CY2023Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2023Q4	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss	1103170000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	202000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	56933000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	1046439000	usd
CY2024Q3	us-gaap	Debt Securities Held To Maturity Accrued Interest After Allowance For Credit Loss DebtSecuritiesHeldToMaturityAccruedInterestAfterAllowanceForCreditLoss	2600000	usd
CY2023Q4	us-gaap	Debt Securities Held To Maturity Accrued Interest After Allowance For Credit Loss DebtSecuritiesHeldToMaturityAccruedInterestAfterAllowanceForCreditLoss	2700000	usd
CY2024Q3	us-gaap	Servicing Asset ServicingAsset	2100000	usd
CY2023Q3	cubi	Servicing Asset Number Of Vie Counterparties ServicingAssetNumberOfVIECounterparties	1	contract
CY2023Q3	us-gaap	Servicing Asset ServicingAsset	3800000	usd
CY2024Q3	us-gaap	Debt Securities Held To Maturity Amortized Cost Excluding Accrued Interest After Allowance For Credit Loss Maturity Without Single Maturity Date DebtSecuritiesHeldToMaturityAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLossMaturityWithoutSingleMaturityDate	1064437000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Debt Maturities Without Single Maturity Date Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	1027514000	usd
CY2023Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2024Q3	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Excluding Accrued Interest DebtSecuritiesHeldToMaturityAllowanceForCreditLossExcludingAccruedInterest	0	usd
CY2024Q3	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest Before Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestBeforeAllowanceForCreditLoss	1064437000	usd
CY2024Q3	cubi	Loans Receivable Held For Sale Net Not Part Of Disposal Group Mortgage1 LoansReceivableHeldForSaleNetNotPartOfDisposalGroupMortgage1	2523000	usd
CY2023Q4	cubi	Loans Receivable Held For Sale Net Not Part Of Disposal Group Mortgage1 LoansReceivableHeldForSaleNetNotPartOfDisposalGroupMortgage1	1215000	usd
CY2024Q3	cubi	Loans Receivable Held For Sale Net Not Part Of Disposal Group Personal Installment Loans LoansReceivableHeldForSaleNetNotPartOfDisposalGroupPersonalInstallmentLoans	55799000	usd
CY2023Q4	cubi	Loans Receivable Held For Sale Net Not Part Of Disposal Group Personal Installment Loans LoansReceivableHeldForSaleNetNotPartOfDisposalGroupPersonalInstallmentLoans	151040000	usd
CY2024Q3	cubi	Loans Receivable Held For Sale Net Not Part Of Disposal Group Other Installment Loans LoansReceivableHeldForSaleNetNotPartOfDisposalGroupOtherInstallmentLoans	217098000	usd
CY2023Q4	cubi	Loans Receivable Held For Sale Net Not Part Of Disposal Group Other Installment Loans LoansReceivableHeldForSaleNetNotPartOfDisposalGroupOtherInstallmentLoans	188062000	usd
CY2024Q3	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	275420000	usd
CY2023Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	340317000	usd
CY2024Q3	cubi	Loans Held For Sale Including Nonperforming Loans LoansHeldForSaleIncludingNonperformingLoans	5300000	usd
CY2023Q4	cubi	Loans Held For Sale Including Nonperforming Loans LoansHeldForSaleIncludingNonperformingLoans	500000	usd
CY2024Q3	cubi	Financing Receivable Excluding Accrued Interest Including Paycheck Protection Program Receivables Before Allowance For Credit Los FinancingReceivableExcludingAccruedInterestIncludingPaycheckProtectionProgramReceivablesBeforeAllowanceForCreditLos	12527283000	usd
CY2023Q4	cubi	Financing Receivable Excluding Accrued Interest Including Paycheck Protection Program Receivables Before Allowance For Credit Los FinancingReceivableExcludingAccruedInterestIncludingPaycheckProtectionProgramReceivablesBeforeAllowanceForCreditLos	11963855000	usd
CY2024Q3	cubi	Loans Receivable Mortgage Warehouse LoansReceivableMortgageWarehouse	1250413000	usd
CY2023Q4	cubi	Loans Receivable Mortgage Warehouse LoansReceivableMortgageWarehouse	897912000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	133158000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	135311000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	13644538000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	12726456000	usd
CY2024Q3	cubi	Financing Receivable Before Allowance For Credit Loss Payment Protection Program Cares Act FinancingReceivableBeforeAllowanceForCreditLossPaymentProtectionProgramCARESAct	30500000	usd
CY2023Q4	cubi	Financing Receivable Before Allowance For Credit Loss Payment Protection Program Cares Act FinancingReceivableBeforeAllowanceForCreditLossPaymentProtectionProgramCARESAct	74700000	usd
CY2024Q3	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	-18100000	usd
CY2023Q4	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	-22700000	usd
CY2024Q3	us-gaap	Financing Receivable Accrued Interest After Allowance For Credit Loss FinancingReceivableAccruedInterestAfterAllowanceForCreditLoss	89200000	usd
CY2023Q4	us-gaap	Financing Receivable Accrued Interest After Allowance For Credit Loss FinancingReceivableAccruedInterestAfterAllowanceForCreditLoss	95000000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	12496815000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	11889120000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest90 Days Or More Past Due Still Accruing FinancingReceivableExcludingAccruedInterest90DaysOrMorePastDueStillAccruing	400000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest90 Days Or More Past Due Still Accruing FinancingReceivableExcludingAccruedInterest90DaysOrMorePastDueStillAccruing	500000	usd
CY2024Q3	us-gaap	Financing Receivable Purchased With Credit Deterioration Amount At Purchase Price FinancingReceivablePurchasedWithCreditDeteriorationAmountAtPurchasePrice	127000000	usd
CY2023Q4	us-gaap	Financing Receivable Purchased With Credit Deterioration Amount At Purchase Price FinancingReceivablePurchasedWithCreditDeteriorationAmountAtPurchasePrice	157200000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Nonaccrual No Allowance FinancingReceivableExcludingAccruedInterestNonaccrualNoAllowance	29252000	usd
CY2024Q3	cubi	Financing Receivable Nonaccrual With Allowance FinancingReceivableNonaccrualWithAllowance	12767000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Nonaccrual FinancingReceivableExcludingAccruedInterestNonaccrual	42019000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Nonaccrual No Allowance FinancingReceivableExcludingAccruedInterestNonaccrualNoAllowance	15919000	usd
CY2023Q4	cubi	Financing Receivable Nonaccrual With Allowance FinancingReceivableNonaccrualWithAllowance	10730000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Nonaccrual FinancingReceivableExcludingAccruedInterestNonaccrual	26649000	usd
	cubi	Loans Held For Sale Average Life From Purchase To Sale LoansHeldForSaleAverageLifeFromPurchaseToSale	P30D
CY2024Q2	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	132436000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	21224000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Recovery FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery	4180000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	17766000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	133158000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	135311000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	66775000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Recovery FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery	13052000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	51570000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	133158000	usd
CY2023Q2	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	139656000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	30020000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Recovery FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery	12522000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	17055000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	139213000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	130924000	usd
	us-gaap	Financing Receivable Allowance For Credit Loss Purchased With Credit Deterioration Increase FinancingReceivableAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease	2576000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	69713000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Recovery FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossRecovery	18000000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Credit Loss Expense Reversal FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal	57426000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	139213000	usd
CY2023Q2	cubi	Financing Receivable Allowance For Credit Loss Purchased With Credit Deterioration Increase Excluding Charge Offs FinancingReceivableAllowanceForCreditLossPurchasedWithCreditDeteriorationIncreaseExcludingChargeOffs	8700000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	133200000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Period Increase Decrease FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossPeriodIncreaseDecrease	-2200000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Loss Excluding Accrued Interest FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest	135300000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Modified Period FinancingReceivableExcludingAccruedInterestModifiedPeriod	7025000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Modified Period FinancingReceivableExcludingAccruedInterestModifiedPeriod	4200000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Modified Period FinancingReceivableExcludingAccruedInterestModifiedPeriod	26545000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Modified Period FinancingReceivableExcludingAccruedInterestModifiedPeriod	11862000	usd
CY2024Q3	us-gaap	Loans And Leases Receivable Impaired Commitment To Lend LoansAndLeasesReceivableImpairedCommitmentToLend	0	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Modified Past12 Months FinancingReceivableExcludingAccruedInterestModifiedPast12Months	42564000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Modified Past12 Months FinancingReceivableExcludingAccruedInterestModifiedPast12Months	11864000	usd
CY2024Q3	cubi	Financing Receivable Before Allowance For Credit Loss Payment Protection Program Cares Act FinancingReceivableBeforeAllowanceForCreditLossPaymentProtectionProgramCARESAct	30500000	usd
CY2023Q4	cubi	Financing Receivable Before Allowance For Credit Loss Payment Protection Program Cares Act FinancingReceivableBeforeAllowanceForCreditLossPaymentProtectionProgramCARESAct	74700000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear	1828965000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear	1127390000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear	4039659000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear	1193162000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear	522563000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear	1282513000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Revolving FinancingReceivableExcludingAccruedInterestRevolving	2090987000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Converted To Term Loan FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoan	411576000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	12496815000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff	519000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff	2432000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff	5232000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff	3363000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff	1295000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff	8383000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Writeoff FinancingReceivableExcludingAccruedInterestRevolvingWriteoff	0	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Converted To Term Loan Writeoff FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoanWriteoff	0	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	21224000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff	2619000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff	6539000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff	23135000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff	16246000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff	4715000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff	13521000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Writeoff FinancingReceivableExcludingAccruedInterestRevolvingWriteoff	0	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Converted To Term Loan Writeoff FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoanWriteoff	0	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	66775000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear	1570977000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear	4397333000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear	1521513000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear	634860000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear	347230000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear	1173759000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Revolving FinancingReceivableExcludingAccruedInterestRevolving	1843180000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Converted To Term Loan FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoan	400268000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest Before Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss	11889120000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year One Originated Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYearWriteoff	9211000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff	24986000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year Three Originated Two Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff	27153000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year Four Originated Three Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff	15938000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Year Five Originated Four Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff	6821000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Originated More Than Five Years Before Current Fiscal Year Writeoff FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff	10957000	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Writeoff FinancingReceivableExcludingAccruedInterestRevolvingWriteoff	0	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Revolving Converted To Term Loan Writeoff FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoanWriteoff	0	usd
CY2023	us-gaap	Financing Receivable Excluding Accrued Interest Allowance For Credit Loss Writeoff FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff	95066000	usd
CY2023Q2	cubi	Financing Receivable Allowance For Credit Loss Purchased With Credit Deterioration Increase Excluding Charge Offs FinancingReceivableAllowanceForCreditLossPurchasedWithCreditDeteriorationIncreaseExcludingChargeOffs	8700000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Purchase FinancingReceivableExcludingAccruedInterestPurchase	70578000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Purchase FinancingReceivableExcludingAccruedInterestPurchase	101735000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Purchase FinancingReceivableExcludingAccruedInterestPurchase	121222000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Purchase FinancingReceivableExcludingAccruedInterestPurchase	750400000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest Sale And Reclassification To Held For Sale FinancingReceivableExcludingAccruedInterestSaleAndReclassificationToHeldForSale	53021000	usd
CY2023Q3	us-gaap	Financing Receivable Excluding Accrued Interest Sale And Reclassification To Held For Sale FinancingReceivableExcludingAccruedInterestSaleAndReclassificationToHeldForSale	12396000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Sale And Reclassification To Held For Sale FinancingReceivableExcludingAccruedInterestSaleAndReclassificationToHeldForSale	76729000	usd
	us-gaap	Financing Receivable Excluding Accrued Interest Sale And Reclassification To Held For Sale FinancingReceivableExcludingAccruedInterestSaleAndReclassificationToHeldForSale	535832000	usd
CY2024Q3	cubi	Loans Heldforinvestment Purchase Priceasa Percentageof Loans Outstanding LoansHeldforinvestmentPurchasePriceasaPercentageofLoansOutstanding	0.959
CY2023Q3	cubi	Loans Heldforinvestment Purchase Priceasa Percentageof Loans Outstanding LoansHeldforinvestmentPurchasePriceasaPercentageofLoansOutstanding	1.000
	cubi	Loans Heldforinvestment Purchase Priceasa Percentageof Loans Outstanding LoansHeldforinvestmentPurchasePriceasaPercentageofLoansOutstanding	0.975
CY2024Q3	us-gaap	Gain Loss On Sale Of Notes Receivable GainLossOnSaleOfNotesReceivable	0	usd
CY2023Q3	us-gaap	Gain Loss On Sale Of Notes Receivable GainLossOnSaleOfNotesReceivable	200000	usd
	cubi	Gain Loss On Sale Of Capital Call Lines Of Credit GainLossOnSaleOfCapitalCallLinesOfCredit	-5000000	usd
CY2024Q3	us-gaap	Lessee Operating Lease Renewal Term LesseeOperatingLeaseRenewalTerm	P10Y
CY2024Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	35901000	usd
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	15644000	usd
CY2024Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	37993000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	18048000	usd
CY2024Q3	us-gaap	Operating Lease Cost OperatingLeaseCost	1792000	usd
CY2023Q3	us-gaap	Operating Lease Cost OperatingLeaseCost	1260000	usd
	us-gaap	Operating Lease Cost OperatingLeaseCost	4277000	usd
	us-gaap	Operating Lease Cost OperatingLeaseCost	3775000	usd
	us-gaap	Variable Lease Cost VariableLeaseCost	0	usd
CY2024Q3	us-gaap	Variable Lease Cost VariableLeaseCost	0	usd
CY2023Q3	us-gaap	Variable Lease Cost VariableLeaseCost	0	usd
	us-gaap	Variable Lease Cost VariableLeaseCost	0	usd
CY2024Q3	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	1507000	usd
CY2024Q3	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	5668000	usd
CY2024Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	6328000	usd
CY2024Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	5833000	usd
CY2024Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	5207000	usd
CY2024Q3	cubi	Lessee Operating Lease Liability To Be Paid After Year Four LesseeOperatingLeaseLiabilityToBePaidAfterYearFour	21187000	usd
CY2024Q3	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	45730000	usd
CY2024Q3	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	7737000	usd
CY2024Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	37993000	usd
CY2024Q3	us-gaap	Operating Lease Payments OperatingLeasePayments	1300000	usd
	us-gaap	Operating Lease Payments OperatingLeasePayments	3800000	usd
CY2023Q3	us-gaap	Operating Lease Payments OperatingLeasePayments	1300000	usd
	us-gaap	Operating Lease Payments OperatingLeasePayments	4400000	usd
CY2024Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P8Y7M6D
CY2023Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y7M6D
CY2024Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0408
CY2023Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0328
CY2024Q3	us-gaap	Sales Type And Direct Financing Leases Profit Loss SalesTypeAndDirectFinancingLeasesProfitLoss	14300000	usd
	us-gaap	Sales Type And Direct Financing Leases Profit Loss SalesTypeAndDirectFinancingLeasesProfitLoss	14300000	usd
CY2024Q3	us-gaap	Sales Type And Direct Financing Leases Interest Income SalesTypeAndDirectFinancingLeasesInterestIncome	9900000	usd
CY2023Q3	us-gaap	Sales Type And Direct Financing Leases Interest Income SalesTypeAndDirectFinancingLeasesInterestIncome	7100000	usd
	us-gaap	Sales Type And Direct Financing Leases Interest Income SalesTypeAndDirectFinancingLeasesInterestIncome	27000000	usd
	us-gaap	Sales Type And Direct Financing Leases Interest Income SalesTypeAndDirectFinancingLeasesInterestIncome	21400000	usd
CY2024Q3	us-gaap	Direct Financing Lease Lease Receivable DirectFinancingLeaseLeaseReceivable	243859000	usd
CY2023Q4	us-gaap	Direct Financing Lease Lease Receivable DirectFinancingLeaseLeaseReceivable	190559000	usd
CY2024Q3	us-gaap	Direct Financing Lease Residual Value Of Leased Asset DirectFinancingLeaseResidualValueOfLeasedAsset	21878000	usd
CY2023Q4	us-gaap	Direct Financing Lease Residual Value Of Leased Asset DirectFinancingLeaseResidualValueOfLeasedAsset	15783000	usd
CY2024Q3	us-gaap	Direct Financing Lease Unguaranteed Residual Asset DirectFinancingLeaseUnguaranteedResidualAsset	10467000	usd
CY2023Q4	us-gaap	Direct Financing Lease Unguaranteed Residual Asset DirectFinancingLeaseUnguaranteedResidualAsset	10010000	usd
CY2024Q3	cubi	Direct Financing Lease Deferred Initial Direct Costs DirectFinancingLeaseDeferredInitialDirectCosts	1348000	usd
CY2023Q4	cubi	Direct Financing Lease Deferred Initial Direct Costs DirectFinancingLeaseDeferredInitialDirectCosts	1213000	usd
CY2024Q3	us-gaap	Direct Financing Lease Deferred Selling Profit DirectFinancingLeaseDeferredSellingProfit	23208000	usd
CY2023Q4	us-gaap	Direct Financing Lease Deferred Selling Profit DirectFinancingLeaseDeferredSellingProfit	11891000	usd
CY2024Q3	us-gaap	Direct Financing Lease Net Investment In Lease Excluding Accrued Interest Before Allowance For Credit Loss DirectFinancingLeaseNetInvestmentInLeaseExcludingAccruedInterestBeforeAllowanceForCreditLoss	254344000	usd
CY2023Q4	us-gaap	Direct Financing Lease Net Investment In Lease Excluding Accrued Interest Before Allowance For Credit Loss DirectFinancingLeaseNetInvestmentInLeaseExcludingAccruedInterestBeforeAllowanceForCreditLoss	205674000	usd
CY2024Q3	cubi	Operating Lease Investmentin Lease Gross OperatingLeaseInvestmentinLeaseGross	287575000	usd
CY2023Q4	cubi	Operating Lease Investmentin Lease Gross OperatingLeaseInvestmentinLeaseGross	282208000	usd
CY2024Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	88636000	usd
CY2023Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	77672000	usd
CY2024Q3	cubi	Operating Lease Deferred Initial Direct Costs OperatingLeaseDeferredInitialDirectCosts	957000	usd
CY2023Q4	cubi	Operating Lease Deferred Initial Direct Costs OperatingLeaseDeferredInitialDirectCosts	1192000	usd
CY2024Q3	cubi	Operating Lease Net Investmentin Lease OperatingLeaseNetInvestmentinLease	199896000	usd
CY2023Q4	cubi	Operating Lease Net Investmentin Lease OperatingLeaseNetInvestmentinLease	205728000	usd
CY2024Q3	cubi	Net Investmentin Direct Financingand Operating Leases NetInvestmentinDirectFinancingandOperatingLeases	454240000	usd
CY2023Q4	cubi	Net Investmentin Direct Financingand Operating Leases NetInvestmentinDirectFinancingandOperatingLeases	411402000	usd
CY2024Q3	us-gaap	Lessor Operating Lease Payments To Be Received Remainder Of Fiscal Year LessorOperatingLeasePaymentsToBeReceivedRemainderOfFiscalYear	11314000	usd
CY2024Q3	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Remainder Of Fiscal Year SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedRemainderOfFiscalYear	19302000	usd
CY2024Q3	us-gaap	Lessor Operating Lease Payments To Be Received Next Twelve Months LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths	41979000	usd
CY2024Q3	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Next Twelve Months SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedNextTwelveMonths	63374000	usd
CY2024Q3	us-gaap	Lessor Operating Lease Payments To Be Received Two Years LessorOperatingLeasePaymentsToBeReceivedTwoYears	47551000	usd
CY2024Q3	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Two Years SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedTwoYears	56173000	usd
CY2024Q3	us-gaap	Lessor Operating Lease Payments To Be Received Three Years LessorOperatingLeasePaymentsToBeReceivedThreeYears	34377000	usd
CY2024Q3	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Three Years SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedThreeYears	47608000	usd
CY2024Q3	us-gaap	Lessor Operating Lease Payments To Be Received Four Years LessorOperatingLeasePaymentsToBeReceivedFourYears	57173000	usd
CY2024Q3	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Four Years SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedFourYears	29881000	usd
CY2024Q3	cubi	Lessor Operating Lease Payment To Be Received After Year Four LessorOperatingLeasePaymentToBeReceivedAfterYearFour	35968000	usd
CY2024Q3	cubi	Sales Type And Direct Financing Leases Lease Receivable To Be Received After Year Four SalesTypeAndDirectFinancingLeasesLeaseReceivableToBeReceivedAfterYearFour	27521000	usd
CY2024Q3	us-gaap	Lessor Operating Lease Payments To Be Received LessorOperatingLeasePaymentsToBeReceived	228362000	usd
CY2024Q3	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceived	243859000	usd
CY2024Q3	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Undiscounted Excess Amount SalesTypeAndDirectFinancingLeasesLeaseReceivableUndiscountedExcessAmount	23208000	usd
CY2024Q3	us-gaap	Sales Type And Direct Financing Leases Lease Receivable SalesTypeAndDirectFinancingLeasesLeaseReceivable	220651000	usd
CY2024Q3	us-gaap	Noninterest Bearing Domestic Deposit Demand NoninterestBearingDomesticDepositDemand	4670809000	usd
CY2023Q4	us-gaap	Noninterest Bearing Domestic Deposit Demand NoninterestBearingDomesticDepositDemand	4422494000	usd
CY2024Q3	us-gaap	Interest Bearing Domestic Deposit Demand InterestBearingDomesticDepositDemand	5606500000	usd
CY2023Q4	us-gaap	Interest Bearing Domestic Deposit Demand InterestBearingDomesticDepositDemand	5580527000	usd
CY2024Q3	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	5360996000	usd
CY2023Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	4629336000	usd
CY2024Q3	us-gaap	Time Deposits TimeDeposits	2431084000	usd
CY2023Q4	us-gaap	Time Deposits TimeDeposits	3287879000	usd
CY2024Q3	us-gaap	Deposits Deposits	18069389000	usd
CY2023Q4	us-gaap	Deposits Deposits	17920236000	usd
CY2024Q3	us-gaap	Time Deposit Maturities Remainder Of Fiscal Year TimeDepositMaturitiesRemainderOfFiscalYear	145935000	usd
CY2024Q3	us-gaap	Time Deposit Maturities Year One TimeDepositMaturitiesYearOne	771882000	usd
CY2024Q3	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	550209000	usd
CY2024Q3	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	305184000	usd
CY2024Q3	us-gaap	Time Deposit Maturities Year Four TimeDepositMaturitiesYearFour	397761000	usd
CY2024Q3	cubi	Time Deposit Maturities After Year Four TimeDepositMaturitiesAfterYearFour	260113000	usd
CY2024Q3	us-gaap	Time Deposits TimeDeposits	2431084000	usd
CY2024Q3	us-gaap	Time Deposits At Or Above Fdic Insurance Limit TimeDepositsAtOrAboveFDICInsuranceLimit	643000000	usd
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CY2023Q4	us-gaap	Deposit Liabilities Reclassified As Loans Receivable1 DepositLiabilitiesReclassifiedAsLoansReceivable1	1200000	usd
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CY2024Q3	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due In Remainder Of Fiscal Year FederalHomeLoanBankAdvancesMaturitiesSummaryDueInRemainderOfFiscalYear	0	usd
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CY2024Q3	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due Within One Year Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate	200000000	usd
CY2024Q3	us-gaap	Federal Home Loan Bank Advances Maturities Summary Average Interest Rate Of Amounts Due Within One Year Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateOfAmountsDueWithinOneYearOfBalanceSheetDate	0.0445
CY2024Q3	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due From One To Two Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromOneToTwoYearsOfBalanceSheetDate	200000000	usd
CY2024Q3	us-gaap	Federal Home Loan Bank Advances Maturities Summary Average Interest Rate One To Two Years From Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateOneToTwoYearsFromBalanceSheetDate	0.0432
CY2024Q3	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due From Two To Three Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromTwoToThreeYearsOfBalanceSheetDate	450000000	usd
CY2024Q3	us-gaap	Federal Home Loan Bank Advances Maturities Summary Average Interest Rate Two To Three Years From Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateTwoToThreeYearsFromBalanceSheetDate	0.0370
CY2024Q3	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due From Three To Four Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromThreeToFourYearsOfBalanceSheetDate	180000000	usd
CY2024Q3	us-gaap	Federal Home Loan Bank Advances Maturities Summary Average Interest Rate Three To Four Years From Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateThreeToFourYearsFromBalanceSheetDate	0.0475
CY2024Q3	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due From Four To Five Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromFourToFiveYearsOfBalanceSheetDate	75000000	usd
CY2024Q3	us-gaap	Federal Home Loan Bank Advances Maturities Summary Average Interest Rate Four To Five Years From Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryAverageInterestRateFourToFiveYearsFromBalanceSheetDate	0.0555
CY2024Q3	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	1105000000	usd
CY2024Q3	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Maximum Amount Available FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresMaximumAmountAvailable	3565068000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Maximum Amount Available FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresMaximumAmountAvailable	3474347000	usd
CY2024Q3	cubi	Federal Reserve Bank Maximum Amount Available FederalReserveBankMaximumAmountAvailable	4180824000	usd
CY2023Q4	cubi	Federal Reserve Bank Maximum Amount Available FederalReserveBankMaximumAmountAvailable	3436000000	usd
CY2024Q2	srt	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	497509	shares
CY2024Q2	cubi	Share Repurchase Program Extension Period ShareRepurchaseProgramExtensionPeriod	P1Y
CY2024Q2	srt	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	497509	shares
	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	373974	shares
CY2024Q3	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	373974	shares
	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	18200000	usd
CY2024Q3	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	18200000	usd
CY2023Q3	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	0	shares
	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	1379883	shares
	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	39800000	usd
CY2024Q3	cubi	Preferred Stock Numberof Series Outstanding PreferredStockNumberofSeriesOutstanding	2	series
CY2023Q4	cubi	Preferred Stock Numberof Series Outstanding PreferredStockNumberofSeriesOutstanding	2	series
CY2024Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	5700000	shares
CY2023Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	5700000	shares
CY2024Q3	us-gaap	Preferred Stock Value PreferredStockValue	137794000	usd
CY2023Q4	us-gaap	Preferred Stock Value PreferredStockValue	137794000	usd
CY2024Q3	us-gaap	Common Equity Tier One Capital CommonEquityTierOneCapital	1777683000	usd
CY2024Q3	cubi	Tier One Common Capitalto Risk Weighted Assets TierOneCommonCapitaltoRiskWeightedAssets	0.12463
CY2024Q3	us-gaap	Common Equity Tier One Capital Required For Capital Adequacy CommonEquityTierOneCapitalRequiredForCapitalAdequacy	641885000	usd
CY2024Q3	cubi	Tier One Common Capital Requiredfor Capital Adequacyto Risk Weighted Assets TierOneCommonCapitalRequiredforCapitalAdequacytoRiskWeightedAssets	0.04500
CY2024Q3	cubi	Common Equity Tier One Capital Requiredfor Basel Iii CommonEquityTierOneCapitalRequiredforBaselIII	998488000	usd
CY2024Q3	cubi	Tier One Common Capital Requiredfor Basel Ii Ito Risk Weighted Assets TierOneCommonCapitalRequiredforBaselIIItoRiskWeightedAssets	0.07000
CY2024Q3	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	1915476000	usd
CY2024Q3	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.13429
CY2024Q3	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy TierOneRiskBasedCapitalRequiredForCapitalAdequacy	855847000	usd
CY2024Q3	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.06000
CY2024Q3	cubi	Tier One Risk Based Capital Requiredfor Basel Iii TierOneRiskBasedCapitalRequiredforBaselIII	1212450000	usd
CY2024Q3	cubi	Tier One Risk Based Capital Requiredfor Basel Ii Ito Risk Weighted Assets TierOneRiskBasedCapitalRequiredforBaselIIItoRiskWeightedAssets	0.08500
CY2024Q3	us-gaap	Capital Capital	2191266000	usd
CY2024Q3	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.15362
CY2024Q3	us-gaap	Capital Required For Capital Adequacy CapitalRequiredForCapitalAdequacy	1141129000	usd
CY2024Q3	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.08000
CY2024Q3	cubi	Capital Requiredfor Basel Iii CapitalRequiredforBaselIII	1497732000	usd
CY2024Q3	cubi	Capital Requiredfor Basel Ii Ito Risk Weighted Assets CapitalRequiredforBaselIIItoRiskWeightedAssets	0.10500
CY2024Q3	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	1915476000	usd
CY2024Q3	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.08947
CY2024Q3	us-gaap	Tier One Leverage Capital Required For Capital Adequacy TierOneLeverageCapitalRequiredForCapitalAdequacy	856386000	usd
CY2024Q3	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.04000
CY2024Q3	cubi	Tier One Leverage Capital Requiredfor Basel Iii TierOneLeverageCapitalRequiredforBaselIII	856386000	usd
CY2024Q3	cubi	Tier One Leverage Capital Requiredfor Basel Ii Ito Average Assets TierOneLeverageCapitalRequiredforBaselIIItoAverageAssets	0.04000
CY2023Q4	us-gaap	Common Equity Tier One Capital CommonEquityTierOneCapital	1661149000	usd
CY2023Q4	cubi	Tier One Common Capitalto Risk Weighted Assets TierOneCommonCapitaltoRiskWeightedAssets	0.12230
CY2023Q4	us-gaap	Common Equity Tier One Capital Required For Capital Adequacy CommonEquityTierOneCapitalRequiredForCapitalAdequacy	611200000	usd
CY2023Q4	cubi	Tier One Common Capital Requiredfor Capital Adequacyto Risk Weighted Assets TierOneCommonCapitalRequiredforCapitalAdequacytoRiskWeightedAssets	0.04500
CY2023Q4	cubi	Common Equity Tier One Capital Requiredfor Basel Iii CommonEquityTierOneCapitalRequiredforBaselIII	950755000	usd
CY2023Q4	cubi	Tier One Common Capital Requiredfor Basel Ii Ito Risk Weighted Assets TierOneCommonCapitalRequiredforBaselIIItoRiskWeightedAssets	0.07000
CY2023Q4	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	1798942000	usd
CY2023Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.13245
CY2023Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy TierOneRiskBasedCapitalRequiredForCapitalAdequacy	814933000	usd
CY2023Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.06000
CY2023Q4	cubi	Tier One Risk Based Capital Requiredfor Basel Iii TierOneRiskBasedCapitalRequiredforBaselIII	1154489000	usd
CY2023Q4	cubi	Tier One Risk Based Capital Requiredfor Basel Ii Ito Risk Weighted Assets TierOneRiskBasedCapitalRequiredforBaselIIItoRiskWeightedAssets	0.08500
CY2023Q4	us-gaap	Capital Capital	2076550000	usd
CY2023Q4	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.15289
CY2023Q4	us-gaap	Capital Required For Capital Adequacy CapitalRequiredForCapitalAdequacy	1086578000	usd
CY2023Q4	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.08000
CY2023Q4	cubi	Capital Requiredfor Basel Iii CapitalRequiredforBaselIII	1426133000	usd
CY2023Q4	cubi	Capital Requiredfor Basel Ii Ito Risk Weighted Assets CapitalRequiredforBaselIIItoRiskWeightedAssets	0.10500
CY2023Q4	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	1798942000	usd
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CY2023Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy TierOneLeverageCapitalRequiredForCapitalAdequacy	859189000	usd
CY2023Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.04000
CY2023Q4	cubi	Tier One Leverage Capital Requiredfor Basel Iii TierOneLeverageCapitalRequiredforBaselIII	859189000	usd
CY2023Q4	cubi	Tier One Leverage Capital Requiredfor Basel Ii Ito Average Assets TierOneLeverageCapitalRequiredforBaselIIItoAverageAssets	0.04000
CY2024Q3	cubi	Capital Conservation Bufferto Risk Weighted Assets Year Fourand Thereafter CapitalConservationBuffertoRiskWeightedAssetsYearFourandThereafter	0.02500
	cubi	Loans Held For Sale Number Of Days Held Prior To Sale LoansHeldForSaleNumberOfDaysHeldPriorToSale	P90D
	cubi	Loans Held For Sale Average Life From Purchase To Sale LoansHeldForSaleAverageLifeFromPurchaseToSale	P30D
CY2024Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	3088022000	usd
CY2024Q3	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	3088022000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	2377733000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	2377733000	usd
CY2024Q3	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss	1064437000	usd
CY2024Q3	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	1027514000	usd
CY2024Q3	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	275420000	usd
CY2024Q3	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	275420000	usd
CY2024Q3	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	13644538000	usd
CY2024Q3	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	13511102000	usd
CY2024Q3	us-gaap	Federal Home Loan Bank Stock And Federal Reserve Bank Stock FederalHomeLoanBankStockAndFederalReserveBankStock	95035000	usd
CY2024Q3	cubi	Federal Home Loan Bank Stock And Federal Reserve Bank Stock Fair Value FederalHomeLoanBankStockAndFederalReserveBankStockFairValue	95035000	usd
CY2024Q3	us-gaap	Derivative Assets DerivativeAssets	15546000	usd
CY2024Q3	us-gaap	Derivative Assets DerivativeAssets	15546000	usd
CY2024Q3	us-gaap	Deposits Deposits	18069389000	usd
CY2024Q3	us-gaap	Deposits Fair Value Disclosure DepositsFairValueDisclosure	18096656000	usd
CY2024Q3	us-gaap	Federal Home Loan Bank Advances Branch Of Fhlb Bank Amount Of Advances By Branch FederalHomeLoanBankAdvancesBranchOfFHLBBankAmountOfAdvancesByBranch	1117229000	usd
CY2024Q3	us-gaap	Federal Home Loan Bank Borrowings Fair Value Disclosure FederalHomeLoanBankBorrowingsFairValueDisclosure	1121074000	usd
CY2024Q3	us-gaap	Other Borrowings OtherBorrowings	99033000	usd
CY2024Q3	cubi	Borrowings Fair Value Disclosure BorrowingsFairValueDisclosure	78000000	usd
CY2024Q3	us-gaap	Subordinated Debt SubordinatedDebt	182439000	usd
CY2024Q3	cubi	Subordinated Debt Fair Value Disclosure SubordinatedDebtFairValueDisclosure	157542000	usd
CY2024Q3	us-gaap	Derivative Liabilities DerivativeLiabilities	21486000	usd
CY2024Q3	us-gaap	Derivative Liabilities DerivativeLiabilities	21486000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	3846346000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	3846346000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	2376860000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Excluding Accrued Interest DebtSecuritiesAvailableForSaleExcludingAccruedInterest	2376860000	usd
CY2023Q4	us-gaap	Debt Securities Held To Maturity Excluding Accrued Interest After Allowance For Credit Loss DebtSecuritiesHeldToMaturityExcludingAccruedInterestAfterAllowanceForCreditLoss	1103170000	usd
CY2023Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	1046439000	usd
CY2023Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	340317000	usd
CY2023Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	340317000	usd
CY2023Q4	us-gaap	Financing Receivable Excluding Accrued Interest After Allowance For Credit Loss FinancingReceivableExcludingAccruedInterestAfterAllowanceForCreditLoss	12726456000	usd
CY2023Q4	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	12513386000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Stock And Federal Reserve Bank Stock FederalHomeLoanBankStockAndFederalReserveBankStock	109548000	usd
CY2023Q4	cubi	Federal Home Loan Bank Stock And Federal Reserve Bank Stock Fair Value FederalHomeLoanBankStockAndFederalReserveBankStockFairValue	109548000	usd
CY2023Q4	us-gaap	Derivative Assets DerivativeAssets	17931000	usd
CY2023Q4	us-gaap	Derivative Assets DerivativeAssets	17931000	usd
CY2023Q4	us-gaap	Deposits Deposits	17920236000	usd
CY2023Q4	us-gaap	Deposits Fair Value Disclosure DepositsFairValueDisclosure	17922005000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances Branch Of Fhlb Bank Amount Of Advances By Branch FederalHomeLoanBankAdvancesBranchOfFHLBBankAmountOfAdvancesByBranch	1203207000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Borrowings Fair Value Disclosure FederalHomeLoanBankBorrowingsFairValueDisclosure	1188517000	usd
CY2023Q4	us-gaap	Other Borrowings OtherBorrowings	123840000	usd
CY2023Q4	cubi	Borrowings Fair Value Disclosure BorrowingsFairValueDisclosure	103674000	usd
CY2023Q4	us-gaap	Subordinated Debt SubordinatedDebt	182230000	usd
CY2023Q4	cubi	Subordinated Debt Fair Value Disclosure SubordinatedDebtFairValueDisclosure	164233000	usd
CY2023Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	27110000	usd
CY2023Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	27110000	usd
CY2024Q3	cubi	Derivative Net Asset Position Aggregate Fair Value DerivativeNetAssetPositionAggregateFairValue	5600000	usd
CY2024Q3	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	6100000	usd
	us-gaap	Loss Contingency Disclosures LossContingencyDisclosures	LOSS CONTINGENCIES<div style="margin-top:9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Loss contingencies, including claims and legal actions arising in the ordinary course of business, are recorded as liabilities when the likelihood of loss is probable and an amount or range of loss can be reasonably estimated. Management does not believe there are any such matters that will have a material effect on the consolidated financial statements that are not currently accrued for. However, in light of the uncertainties inherent in these matters, it is possible that the ultimate resolution may have a material adverse effect on Customers’ results of operations for a particular period, and future changes in circumstances or additional information could result in accruals or resolution in excess of established accruals, which could adversely affect Customers’ results of operations, potentially materially.</span></div>
CY2024Q3	ecd	Rule10b51 Arr Adopted Flag Rule10b51ArrAdoptedFlag	false
CY2024Q3	ecd	Non Rule10b51 Arr Adopted Flag NonRule10b51ArrAdoptedFlag	false
CY2024Q3	ecd	Rule10b51 Arr Trmntd Flag Rule10b51ArrTrmntdFlag	false
CY2024Q3	ecd	Non Rule10b51 Arr Trmntd Flag NonRule10b51ArrTrmntdFlag	false

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$CUBI
Customers Bancorp, Inc. Stock $cubi

2024 Q4 Form 10-Q Financial Statement

#000148881324000097 Filed on November 12, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CUBI Customers Bancorp, Inc. Stock $cubi

2024 Q4 Form 10-Q Financial Statement

#000148881324000097 Filed on November 12, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CUBI
Customers Bancorp, Inc. Stock $cubi