$CUBI
Customers Bancorp, Inc. Stock $cubi

$cubi Overview Financials Valuation SEC Filings Company Website

2021 Q1 Form 10-Q Financial Statement

#000148881321000123 Filed on May 10, 2021

Income Statement

Concept	2021 Q1	2020 Q1
Revenue	$161.1M	$125.3M
YoY Change	28.54%	24.01%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development	$19.99M	$10.54M
YoY Change	89.66%	-11.83%
% of Gross Profit
Depreciation & Amortization	$5.300M	$7.000M
YoY Change	-24.29%	62.79%
% of Gross Profit
Operating Expenses	$19.99M	$10.54M
YoY Change	89.66%	-11.83%
Operating Profit
YoY Change
Interest Expense	$28.38M	$44.02M
YoY Change	-35.52%	5.39%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$92.19M	$11.73M
YoY Change	686.08%	-42.14%
Income Tax	$17.56M	$3.274M
% Of Pretax Income	19.05%	27.92%
Net Earnings	$36.60M	$3.100M
YoY Change	1080.48%	-79.92%
Net Earnings / Revenue	22.71%	2.47%
Basic Earnings Per Share	$1.04	-$0.02
Diluted Earnings Per Share	$1.01	-$0.02
COMMON SHARES
Basic Shares Outstanding	31.88M shares	31.39M shares
Diluted Shares Outstanding	32.84M shares	31.39M shares

Balance Sheet

Concept	2021 Q1	2020 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$515.4M	$256.2M
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	$10.94M	$8.890M
YoY Change	23.09%	-15.67%
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	$18.82B	$12.02B
YoY Change	56.57%	18.48%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$335.0M	$57.00M
YoY Change	487.72%	23.91%
Accrued Expenses	$17.00M	$20.00M
YoY Change	-15.0%	-16.67%
Deferred Revenue
YoY Change
Short-Term Debt	$1.215B	$880.0M
YoY Change	38.07%	126.8%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$352.0M	$77.00M
YoY Change	357.14%	10.0%
LONG-TERM LIABILITIES
Long-Term Debt	$3.590B	$305.0M
YoY Change	1077.05%	30.9%
Other Long-Term Liabilities		$118.0M
YoY Change		391.67%
Total Long-Term Liabilities	$3.590B	$423.0M
YoY Change	748.7%	64.59%
TOTAL LIABILITIES
Total Short-Term Liabilities	$352.0M	$77.00M
Total Long-Term Liabilities	$3.590B	$423.0M
Total Liabilities	$17.63B	$11.05B
YoY Change	59.48%	20.61%
SHAREHOLDERS EQUITY
Retained Earnings	$438.8M	$319.5M
YoY Change	37.33%	-2.72%
Common Stock	$33.52M	$32.75M
YoY Change	2.34%	1.05%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$21.78M	$21.78M
YoY Change	0.0%	0.0%
Treasury Stock Shares	1.281M shares	1.281M shares
Shareholders Equity	$1.189B	$964.6M
YoY Change
Total Liabilities & Shareholders Equity	$18.82B	$12.02B
YoY Change	56.57%	18.48%

Cashflow Statement

Concept	2021 Q1	2020 Q1
OPERATING ACTIVITIES
Net Income	$36.60M	$3.100M
YoY Change	1080.48%	-79.92%
Depreciation, Depletion And Amortization	$5.300M	$7.000M
YoY Change	-24.29%	62.79%
Cash From Operating Activities	$177.6M	-$35.14M
YoY Change	-605.39%	484.51%
INVESTING ACTIVITIES
Capital Expenditures	$298.0K	$89.00K
YoY Change	234.83%	-36.88%
Acquisitions
YoY Change
Other Investing Activities	-$521.5M	-$427.0M
YoY Change	22.13%	126.65%
Cash From Investing Activities	-$526.7M	-$433.5M
YoY Change	21.48%	120.85%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	-$6.684M	-$225.0K
YoY Change	2870.67%	-55.09%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	$171.1M	$512.4M
YoY Change	-66.61%	98.73%
NET CHANGE
Cash From Operating Activities	177.6M	-$35.14M
Cash From Investing Activities	-$526.7M	-$433.5M
Cash From Financing Activities	$171.1M	$512.4M
Net Change In Cash	-$178.0M	$43.73M
YoY Change	-507.05%	-21.25%
FREE CASH FLOW
Cash From Operating Activities	$177.6M	-$35.14M
Capital Expenditures	$298.0K	$89.00K
Free Cash Flow	$177.3M	-$35.23M
YoY Change	-603.27%	472.57%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021Q1	dei	Amendment Flag AmendmentFlag	false
CY2021Q1	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021Q1	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q1
CY2021Q1	dei	Entity Central Index Key EntityCentralIndexKey	0001488813
CY2021Q1	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2019	us-gaap	Accounting Standards Update Extensible List AccountingStandardsUpdateExtensibleList	us-gaap:AccountingStandardsUpdate201613Member
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	us-gaap:OtherAssets
CY2021Q1	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	us-gaap:OtherAssets
CY2020Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	us-gaap:OtherLiabilities
CY2021Q1	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	us-gaap:OtherLiabilities
CY2021Q1	dei	Document Type DocumentType	10-Q
CY2021Q1	dei	Document Quarterly Report DocumentQuarterlyReport	true
CY2021Q1	dei	Document Period End Date DocumentPeriodEndDate	2021-03-31
CY2021Q1	dei	Document Transition Report DocumentTransitionReport	false
CY2021Q1	dei	Entity File Number EntityFileNumber	001-35542
CY2021Q1	dei	Entity Registrant Name EntityRegistrantName	Customers Bancorp, Inc.
CY2021Q1	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	PA
CY2021Q1	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	27-2290659
CY2021Q1	dei	Entity Address Address Line1 EntityAddressAddressLine1	701 Reading Avenue
CY2021Q1	dei	Entity Address City Or Town EntityAddressCityOrTown	West Reading
CY2021Q1	dei	Entity Address State Or Province EntityAddressStateOrProvince	PA
CY2021Q1	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	19611
CY2021Q1	dei	City Area Code CityAreaCode	610
CY2021Q1	dei	Local Phone Number LocalPhoneNumber	933-2000
CY2021Q1	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021Q1	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2021Q1	dei	Entity Filer Category EntityFilerCategory	Accelerated Filer
CY2021Q1	dei	Entity Small Business EntitySmallBusiness	false
CY2021Q1	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2021Q1	dei	Entity Shell Company EntityShellCompany	false
CY2021Q2	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	32266264	shares
CY2021Q1	us-gaap	Cash And Due From Banks CashAndDueFromBanks	3123000	USD
CY2020Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	78090000	USD
CY2021Q1	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	512241000	USD
CY2020Q4	us-gaap	Interest Bearing Deposits In Banks InterestBearingDepositsInBanks	615264000	USD
CY2021Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	515364000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	693354000	USD
CY2021Q1	cubi	Investment Securitiesat Fair Value InvestmentSecuritiesatFairValue	1441904000	USD
CY2020Q4	cubi	Investment Securitiesat Fair Value InvestmentSecuritiesatFairValue	1210285000	USD
CY2021Q1	us-gaap	Loans Held For Sale Fair Value Disclosure LoansHeldForSaleFairValueDisclosure	1205000	USD
CY2020Q4	us-gaap	Loans Held For Sale Fair Value Disclosure LoansHeldForSaleFairValueDisclosure	5509000	USD
CY2021Q1	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	46106000	USD
CY2020Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	79086000	USD
CY2021Q1	cubi	Loansreceivablemortgagewarehouse Loansreceivablemortgagewarehouse	3407622000	USD
CY2020Q4	cubi	Loansreceivablemortgagewarehouse Loansreceivablemortgagewarehouse	3616432000	USD
CY2021Q1	cubi	Financing Receivable Before Allowance For Credit Loss Payment Protection Program Cares Act FinancingReceivableBeforeAllowanceForCreditLossPaymentProtectionProgramCARESAct	5178089000	USD
CY2020Q4	cubi	Financing Receivable Before Allowance For Credit Loss Payment Protection Program Cares Act FinancingReceivableBeforeAllowanceForCreditLossPaymentProtectionProgramCARESAct	4561365000	USD
CY2021Q1	us-gaap	Notes Receivable Gross NotesReceivableGross	7536489000	USD
CY2020Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	7575368000	USD
CY2021Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	128736000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	144176000	USD
CY2021Q1	us-gaap	Notes Receivable Net NotesReceivableNet	15993464000	USD
CY2020Q4	us-gaap	Notes Receivable Net NotesReceivableNet	15608989000	USD
CY2021Q1	us-gaap	Federal Home Loan Bank Stock And Federal Reserve Bank Stock FederalHomeLoanBankStockAndFederalReserveBankStock	69420000	USD
CY2020Q4	us-gaap	Federal Home Loan Bank Stock And Federal Reserve Bank Stock FederalHomeLoanBankStockAndFederalReserveBankStock	71368000	USD
CY2021Q1	us-gaap	Interest Receivable InterestReceivable	83186000	USD
CY2020Q4	us-gaap	Interest Receivable InterestReceivable	80412000	USD
CY2021Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	10943000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	11225000	USD
CY2021Q1	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	281923000	USD
CY2020Q4	us-gaap	Bank Owned Life Insurance BankOwnedLifeInsurance	280067000	USD
CY2021Q1	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	3911000	USD
CY2020Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	3969000	USD
CY2021Q1	us-gaap	Other Assets OtherAssets	371439000	USD
CY2020Q4	us-gaap	Other Assets OtherAssets	338438000	USD
CY2021Q1	us-gaap	Assets Of Disposal Group Including Discontinued Operation AssetsOfDisposalGroupIncludingDiscontinuedOperation	0	USD
CY2020Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation AssetsOfDisposalGroupIncludingDiscontinuedOperation	62055000	USD
CY2021Q1	us-gaap	Assets Assets	18817660000	USD
CY2020Q4	us-gaap	Assets Assets	18439248000	USD
CY2021Q1	us-gaap	Noninterest Bearing Domestic Deposit Demand NoninterestBearingDomesticDepositDemand	2687628000	USD
CY2020Q4	us-gaap	Noninterest Bearing Domestic Deposit Demand NoninterestBearingDomesticDepositDemand	2356998000	USD
CY2021Q1	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	9784812000	USD
CY2020Q4	us-gaap	Interest Bearing Deposit Liabilities InterestBearingDepositLiabilities	8952931000	USD
CY2021Q1	us-gaap	Deposits Deposits	12472440000	USD
CY2020Q4	us-gaap	Deposits Deposits	11309929000	USD
CY2021Q1	us-gaap	Federal Funds Purchased FederalFundsPurchased	365000000	USD
CY2020Q4	us-gaap	Federal Funds Purchased FederalFundsPurchased	250000000	USD
CY2021Q1	us-gaap	Federal Home Loan Bank Advances Branch Of Fhlb Bank Amount Of Advances By Branch FederalHomeLoanBankAdvancesBranchOfFHLBBankAmountOfAdvancesByBranch	850000000	USD
CY2020Q4	us-gaap	Federal Home Loan Bank Advances Branch Of Fhlb Bank Amount Of Advances By Branch FederalHomeLoanBankAdvancesBranchOfFHLBBankAmountOfAdvancesByBranch	850000000	USD
CY2021Q1	us-gaap	Other Borrowings OtherBorrowings	124138000	USD
CY2020Q4	us-gaap	Other Borrowings OtherBorrowings	124037000	USD
CY2021Q1	us-gaap	Subordinated Debt SubordinatedDebt	181464000	USD
CY2020Q4	us-gaap	Subordinated Debt SubordinatedDebt	181394000	USD
CY2021Q1	cubi	Federal Reserve Bank Paycheck Protection Program Liquidity Facility Cares Act FederalReserveBankPaycheckProtectionProgramLiquidityFacilityCARESAct	3284156000	USD
CY2020Q4	cubi	Federal Reserve Bank Paycheck Protection Program Liquidity Facility Cares Act FederalReserveBankPaycheckProtectionProgramLiquidityFacilityCARESAct	4415016000	USD
CY2021Q1	us-gaap	Accounts Payable And Other Accrued Liabilities AccountsPayableAndOtherAccruedLiabilities	351741000	USD
CY2020Q4	us-gaap	Accounts Payable And Other Accrued Liabilities AccountsPayableAndOtherAccruedLiabilities	152082000	USD
CY2021Q1	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation	0	USD
CY2020Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation	39704000	USD
CY2021Q1	us-gaap	Liabilities Liabilities	17628939000	USD
CY2020Q4	us-gaap	Liabilities Liabilities	17322162000	USD
CY2021Q1	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2020Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2020Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	1.00
CY2021Q1	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	1.00
CY2020Q4	us-gaap	Preferred Stock Liquidation Preference PreferredStockLiquidationPreference	25.00
CY2021Q1	us-gaap	Preferred Stock Liquidation Preference PreferredStockLiquidationPreference	25.00
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	18439248000	USD
CY2020Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	100000000	shares
CY2021Q1	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	100000000	shares
CY2020Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	9000000	shares
CY2021Q1	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	9000000	shares
CY2020Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	9000000	shares
CY2021Q1	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	9000000	shares
CY2021Q1	us-gaap	Preferred Stock Value PreferredStockValue	217471000	USD
CY2020Q4	us-gaap	Preferred Stock Value PreferredStockValue	217471000	USD
CY2021Q1	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1.00
CY2020Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1.00
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	200000000	shares
CY2021Q1	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	200000000	shares
CY2021Q1	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	33519381	shares
CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	32985707	shares
CY2021Q1	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	32238762	shares
CY2021Q1	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	515318000	USD
CY2020Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	455592000	USD
CY2021Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	438802000	USD
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	31705088	shares
CY2021Q1	us-gaap	Common Stock Value CommonStockValue	33519000	USD
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	32986000	USD
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	438581000	USD
CY2021Q1	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	5391000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-5764000	USD
CY2021Q1	us-gaap	Treasury Stock Shares TreasuryStockShares	1280619	shares
CY2020Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	1280619	shares
CY2021Q1	us-gaap	Treasury Stock Value TreasuryStockValue	21780000	USD
CY2020Q4	us-gaap	Treasury Stock Value TreasuryStockValue	21780000	USD
CY2021Q1	us-gaap	Stockholders Equity StockholdersEquity	1188721000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	1117086000	USD
CY2021Q1	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	18817660000	USD
CY2021Q1	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	152117000	USD
CY2020Q1	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	116080000	USD
CY2021Q1	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	7979000	USD
CY2020Q1	us-gaap	Interest And Dividend Income Securities InterestAndDividendIncomeSecurities	4977000	USD
CY2021Q1	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	1019000	USD
CY2020Q1	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	4286000	USD
CY2021Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	161115000	USD
CY2020Q1	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	125343000	USD
CY2021Q1	us-gaap	Interest Expense Deposits InterestExpenseDeposits	15658000	USD
CY2020Q1	us-gaap	Interest Expense Deposits InterestExpenseDeposits	34353000	USD
CY2021Q1	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Short Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesShortTerm	5192000	USD
CY2020Q1	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Short Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesShortTerm	5390000	USD
CY2021Q1	us-gaap	Interest Expense Subordinated Notes And Debentures InterestExpenseSubordinatedNotesAndDebentures	2689000	USD
CY2020Q1	us-gaap	Interest Expense Subordinated Notes And Debentures InterestExpenseSubordinatedNotesAndDebentures	2689000	USD
CY2021Q1	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	4845000	USD
CY2020Q1	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	1590000	USD
CY2021Q1	us-gaap	Interest Expense InterestExpense	28384000	USD
CY2020Q1	us-gaap	Interest Expense InterestExpense	44022000	USD
CY2021Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	132731000	USD
CY2020Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	81321000	USD
CY2021Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	-2919000	USD
CY2020Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	31786000	USD
CY2021Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	135650000	USD
CY2020Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	49535000	USD
CY2021Q1	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	5205000	USD
CY2020Q1	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	4268000	USD
CY2021Q1	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	1679000	USD
CY2020Q1	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	1762000	USD
CY2021Q1	cubi	Fees Mortgage Warehouse Lending FeesMortgageWarehouseLending	4247000	USD
CY2020Q1	cubi	Fees Mortgage Warehouse Lending FeesMortgageWarehouseLending	1952000	USD
CY2021Q1	cubi	Gain On Sale Of Mortgages And Other Loans GainOnSaleOfMortgagesAndOtherLoans	1575000	USD
CY2020Q1	cubi	Gain On Sale Of Mortgages And Other Loans GainOnSaleOfMortgagesAndOtherLoans	11000	USD
CY2021Q1	us-gaap	Fees And Commissions Mortgage Banking And Servicing FeesAndCommissionsMortgageBankingAndServicing	463000	USD
CY2020Q1	us-gaap	Fees And Commissions Mortgage Banking And Servicing FeesAndCommissionsMortgageBankingAndServicing	296000	USD
CY2021Q1	us-gaap	Debt Securities Realized Gain Loss DebtSecuritiesRealizedGainLoss	23566000	USD
CY2020Q1	us-gaap	Debt Securities Realized Gain Loss DebtSecuritiesRealizedGainLoss	3974000	USD
CY2021Q1	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	974000	USD
CY2020Q1	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	-1378000	USD
CY2021Q1	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	2537000	USD
CY2020Q1	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-1146000	USD
CY2021Q1	us-gaap	Gain Loss On Discontinuation Of Cash Flow Hedge Due To Forecasted Transaction Probable Of Not Occurring Net GainLossOnDiscontinuationOfCashFlowHedgeDueToForecastedTransactionProbableOfNotOccurringNet	-24467000	USD
CY2020Q1	us-gaap	Gain Loss On Discontinuation Of Cash Flow Hedge Due To Forecasted Transaction Probable Of Not Occurring Net GainLossOnDiscontinuationOfCashFlowHedgeDueToForecastedTransactionProbableOfNotOccurringNet	0	USD
CY2021Q1	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	1741000	USD
CY2020Q1	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	600000	USD
CY2021Q1	us-gaap	Noninterest Income NoninterestIncome	18468000	USD
CY2020Q1	us-gaap	Noninterest Income NoninterestIncome	11160000	USD
CY2021Q1	us-gaap	Labor And Related Expense LaborAndRelatedExpense	23971000	USD
CY2020Q1	us-gaap	Labor And Related Expense LaborAndRelatedExpense	20523000	USD
CY2021Q1	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	19988000	USD
CY2020Q1	us-gaap	Communications And Information Technology CommunicationsAndInformationTechnology	10539000	USD
CY2021Q1	us-gaap	Professional Fees ProfessionalFees	6289000	USD
CY2020Q1	us-gaap	Professional Fees ProfessionalFees	3544000	USD
CY2021Q1	us-gaap	Occupancy Net OccupancyNet	2621000	USD
CY2020Q1	us-gaap	Occupancy Net OccupancyNet	2613000	USD
CY2021Q1	cubi	Operating Leases Commercial Lease Depreciation OperatingLeasesCommercialLeaseDepreciation	4291000	USD
CY2020Q1	cubi	Operating Leases Commercial Lease Depreciation OperatingLeasesCommercialLeaseDepreciation	3427000	USD
CY2021Q1	cubi	Fdic Assessments Taxes And Regulatory Fees FdicAssessmentsTaxesAndRegulatoryFees	2719000	USD
CY2020Q1	cubi	Fdic Assessments Taxes And Regulatory Fees FdicAssessmentsTaxesAndRegulatoryFees	2867000	USD
CY2021Q1	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	418000	USD
CY2020Q1	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	0	USD
CY2021Q1	cubi	Loan Workout Expense Income LoanWorkoutExpenseIncome	-261000	USD
CY2020Q1	cubi	Loan Workout Expense Income LoanWorkoutExpenseIncome	366000	USD
CY2021Q1	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	561000	USD
CY2020Q1	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	1424000	USD
CY2021Q1	us-gaap	Other Noninterest Expense OtherNoninterestExpense	1330000	USD
CY2020Q1	us-gaap	Other Noninterest Expense OtherNoninterestExpense	3664000	USD
CY2021Q1	us-gaap	Noninterest Expense NoninterestExpense	61927000	USD
CY2020Q1	us-gaap	Noninterest Expense NoninterestExpense	48967000	USD
CY2021Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	92191000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	11728000	USD
CY2021Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	17560000	USD
CY2020Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3274000	USD
CY2021Q1	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	74631000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	8454000	USD
CY2021Q1	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	-20354000	USD
CY2020Q1	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	-6722000	USD
CY2021Q1	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	17682000	USD
CY2020Q1	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	-1368000	USD
CY2021Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-38036000	USD
CY2020Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-5354000	USD
CY2021Q1	us-gaap	Net Income Loss NetIncomeLoss	36595000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	3100000	USD
CY2021Q1	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	3391000	USD
CY2020Q1	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	3615000	USD
CY2021Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	33204000	USD
CY2020Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-515000	USD
CY2021Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.23
CY2020Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.15
CY2021Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.04
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.02
CY2021Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.17
CY2020Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.15
CY2021Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.01
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.02
CY2021Q1	us-gaap	Net Income Loss NetIncomeLoss	36595000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	3100000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	400000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-9098000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-2366000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	104000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	23566000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	3974000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	6127000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	1033000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-17143000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-9673000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	12315000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-27697000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	3202000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax	-7351000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	-25926000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	-1478000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	-6741000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax	-384000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	28298000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-19252000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	11155000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-28925000	USD
CY2021Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	47750000	USD
CY2020Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-25825000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	1117086000	USD
CY2021Q1	us-gaap	Net Income Loss NetIncomeLoss	36595000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	11155000	USD
CY2021Q1	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3391000	USD
CY2021Q1	cubi	Adjustments To Additional Paid In Capital Increase From Sale Of Noncontrolling Interest AdjustmentsToAdditionalPaidInCapitalIncreaseFromSaleOfNoncontrollingInterest	31893000	USD
CY2021Q1	us-gaap	Dividends Common Stock Stock DividendsCommonStockStock	32983000	USD
CY2021Q1	us-gaap	Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition	19592000	USD
CY2021Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3609000	USD
CY2021Q1	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	5165000	USD
CY2021Q1	us-gaap	Stockholders Equity StockholdersEquity	1188721000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	1052795000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	3100000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-28925000	USD
CY2020Q1	us-gaap	Dividends Preferred Stock DividendsPreferredStock	3615000	USD
CY2020Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3228000	USD
CY2020Q1	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-472000	USD
CY2020Q1	us-gaap	Stockholders Equity StockholdersEquity	964636000	USD
CY2021Q1	cubi	Special Dividends Shares SpecialDividendsShares	0.15389	shares
CY2021Q1	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	74631000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	8454000	USD
CY2021Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	-2919000	USD
CY2020Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	31786000	USD
CY2021Q1	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	5321000	USD
CY2020Q1	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	7038000	USD
CY2021Q1	us-gaap	Share Based Compensation ShareBasedCompensation	3082000	USD
CY2020Q1	us-gaap	Share Based Compensation ShareBasedCompensation	3463000	USD
CY2021Q1	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-6198000	USD
CY2020Q1	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-22287000	USD
CY2021Q1	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	14000	USD
CY2020Q1	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-251000	USD
CY2021Q1	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	974000	USD
CY2020Q1	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	-1378000	USD
CY2021Q1	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	23566000	USD
CY2020Q1	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	3974000	USD
CY2021Q1	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	2537000	USD
CY2020Q1	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-1146000	USD
CY2021Q1	us-gaap	Gain Loss On Discontinuation Of Cash Flow Hedge Due To Forecasted Transaction Probable Of Not Occurring Net GainLossOnDiscontinuationOfCashFlowHedgeDueToForecastedTransactionProbableOfNotOccurringNet	-24467000	USD
CY2020Q1	us-gaap	Gain Loss On Discontinuation Of Cash Flow Hedge Due To Forecasted Transaction Probable Of Not Occurring Net GainLossOnDiscontinuationOfCashFlowHedgeDueToForecastedTransactionProbableOfNotOccurringNet	0	USD
CY2021Q1	cubi	Payment For Settlement Of Terminated Cash Flow Hedges PaymentForSettlementOfTerminatedCashFlowHedges	27156000	USD
CY2020Q1	cubi	Payment For Settlement Of Terminated Cash Flow Hedges PaymentForSettlementOfTerminatedCashFlowHedges	0	USD
CY2021Q1	cubi	Gain Loss On Fair Value Adjustment On Loans Held For Sale GainLossOnFairValueAdjustmentOnLoansHeldForSale	1115000	USD
CY2020Q1	cubi	Gain Loss On Fair Value Adjustment On Loans Held For Sale GainLossOnFairValueAdjustmentOnLoansHeldForSale	0	USD
CY2021Q1	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	2071000	USD
CY2020Q1	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	170000	USD
CY2021Q1	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	12323000	USD
CY2020Q1	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	7046000	USD
CY2021Q1	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	17122000	USD
CY2020Q1	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	7948000	USD
CY2021Q1	cubi	Accretion Of Fair Values Discounts Net AccretionOfFairValuesDiscountsNet	-345000	USD
CY2020Q1	cubi	Accretion Of Fair Values Discounts Net AccretionOfFairValuesDiscountsNet	-378000	USD
CY2021Q1	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	1679000	USD
CY2020Q1	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	1762000	USD
CY2021Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-20979000	USD
CY2020Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	98985000	USD
CY2021Q1	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	135679000	USD
CY2020Q1	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	38206000	USD
CY2021Q1	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	200384000	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	-34932000	USD
CY2021Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Other Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfOtherInvestments	62348000	USD
CY2020Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Other Investments ProceedsFromMaturitiesPrepaymentsAndCallsOfOtherInvestments	24079000	USD
CY2021Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	353915000	USD
CY2020Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	USD
CY2021Q1	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	589874000	USD
CY2020Q1	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	158782000	USD
CY2021Q1	cubi	Originationofmortgagewarehouseloans Originationofmortgagewarehouseloans	16998093000	USD
CY2020Q1	cubi	Originationofmortgagewarehouseloans Originationofmortgagewarehouseloans	9791820000	USD
CY2021Q1	cubi	Proceedsfrompayoffsofmortgagewarehouseloans Proceedsfrompayoffsofmortgagewarehouseloans	17211909000	USD
CY2020Q1	cubi	Proceedsfrompayoffsofmortgagewarehouseloans Proceedsfrompayoffsofmortgagewarehouseloans	9520758000	USD
CY2021Q1	us-gaap	Payments For Proceeds From Other Loans And Leases PaymentsForProceedsFromOtherLoansAndLeases	486158000	USD
CY2020Q1	us-gaap	Payments For Proceeds From Other Loans And Leases PaymentsForProceedsFromOtherLoansAndLeases	-174971000	USD
CY2021Q1	us-gaap	Proceeds From Sale Of Loans And Leases Held For Investment ProceedsFromSaleOfLoansAndLeasesHeldForInvestment	39534000	USD
CY2020Q1	us-gaap	Proceeds From Sale Of Loans And Leases Held For Investment ProceedsFromSaleOfLoansAndLeasesHeldForInvestment	0	USD
CY2021Q1	us-gaap	Payments To Acquire Loans And Leases Held For Investment PaymentsToAcquireLoansAndLeasesHeldForInvestment	117036000	USD
CY2020Q1	us-gaap	Payments To Acquire Loans And Leases Held For Investment PaymentsToAcquireLoansAndLeasesHeldForInvestment	193363000	USD
CY2021Q1	us-gaap	Proceeds From Sale Of Other Investments ProceedsFromSaleOfOtherInvestments	1948000	USD
CY2020Q1	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	2926000	USD
CY2021Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	298000	USD
CY2020Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	89000	USD
CY2021Q1	us-gaap	Payments To Acquire Equipment On Lease PaymentsToAcquireEquipmentOnLease	4849000	USD
CY2020Q1	us-gaap	Payments To Acquire Equipment On Lease PaymentsToAcquireEquipmentOnLease	6384000	USD
CY2021Q1	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-526654000	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-433556000	USD
CY2021Q1	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	1162511000	USD
CY2020Q1	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-235293000	USD
CY2021Q1	cubi	Proceeds From Repayments Of Short Term Debt From The Federal Reserve Bank ProceedsFromRepaymentsOfShortTermDebtFromTheFederalReserveBank	0	USD
CY2020Q1	cubi	Proceeds From Repayments Of Short Term Debt From The Federal Reserve Bank ProceedsFromRepaymentsOfShortTermDebtFromTheFederalReserveBank	175000000	USD
CY2021Q1	cubi	Proceeds From Repayments Of Short Term Debt From The Federal Home Loan Bank ProceedsFromRepaymentsOfShortTermDebtFromTheFederalHomeLoanBank	0	USD
CY2020Q1	cubi	Proceeds From Repayments Of Short Term Debt From The Federal Home Loan Bank ProceedsFromRepaymentsOfShortTermDebtFromTheFederalHomeLoanBank	410000000	USD
CY2021Q1	us-gaap	Increase Decrease In Federal Funds Purchased IncreaseDecreaseInFederalFundsPurchased	-115000000	USD
CY2020Q1	us-gaap	Increase Decrease In Federal Funds Purchased IncreaseDecreaseInFederalFundsPurchased	-167000000	USD
CY2021Q1	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	-1130860000	USD
CY2020Q1	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	0	USD
CY2021Q1	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	3401000	USD
CY2020Q1	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	3615000	USD
CY2021Q1	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1988000	USD
CY2020Q1	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	932000	USD
CY2021Q1	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	6684000	USD
CY2020Q1	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	225000	USD
CY2021Q1	cubi	Proceeds From Sale Of Noncontrolling Interest ProceedsFromSaleOfNoncontrollingInterest	23125000	USD
CY2020Q1	cubi	Proceeds From Sale Of Noncontrolling Interest ProceedsFromSaleOfNoncontrollingInterest	0	USD
CY2021Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	171071000	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	512385000	USD
CY2021Q1	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	-155199000	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Continuing Operations NetCashProvidedByUsedInContinuingOperations	43897000	USD
CY2021Q1	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	-22791000	USD
CY2020Q1	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	-232000	USD
CY2021Q1	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	0	USD
CY2020Q1	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	62000	USD
CY2021Q1	us-gaap	Net Cash Provided By Used In Discontinued Operations NetCashProvidedByUsedInDiscontinuedOperations	-22791000	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Discontinued Operations NetCashProvidedByUsedInDiscontinuedOperations	-170000	USD
CY2021Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-177990000	USD
CY2020Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	43727000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	693354000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	212505000	USD
CY2021Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	515364000	USD
CY2020Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	256232000	USD
CY2021Q1	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	0	USD
CY2020Q1	us-gaap	Transfer To Other Real Estate TransferToOtherRealEstate	31000	USD
CY2021Q1	us-gaap	Stock Issued1 StockIssued1	32983000	USD
CY2020Q1	us-gaap	Stock Issued1 StockIssued1	0	USD
CY2021Q1	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	44258000	USD
CY2020Q1	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	0	USD
CY2021Q1	cubi	Unsettled Sales Of Investment Securities UnsettledSalesOfInvestmentSecurities	0	USD
CY2020Q1	cubi	Unsettled Sales Of Investment Securities UnsettledSalesOfInvestmentSecurities	104469000	USD
CY2021Q1	cubi	Unsettled Purchases Of Investment Securities UnsettledPurchasesOfInvestmentSecurities	56620000	USD
CY2020Q1	cubi	Unsettled Purchases Of Investment Securities UnsettledPurchasesOfInvestmentSecurities	97247000	USD
CY2021Q1	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 residents and businesses in Southeastern Pennsylvania (Bucks, Berks, Chester, Philadelphia and Delaware Counties); Rye Brook, New York (Westchester County); Hamilton, New Jersey (Mercer County); Boston, Massachusetts; Providence, Rhode Island; Portsmouth, New Hampshire (Rockingham County); Manhattan and Melville, New York; Washington, D.C.; Chicago, Illinois; and nationally for certain loan and deposit products. The Bank has 12 full-service branches and provides commercial banking products, primarily loans and deposits. In addition, Customers Bank also administratively supports loan and other financial products, including equipment finance leases, to customers through its limited-purpose offices in Boston, Massachusetts; Providence, Rhode Island; Portsmouth, New Hampshire; Manhattan and Melville, New York; Philadelphia and Lancaster, Pennsylvania; Chicago, Illinois, Dallas, Texas and Orlando, Florida. The Bank also serves specialty niche businesses nationwide, including its commercial loans to mortgage banking businesses, commercial equipment financing, SBA lending, specialty 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. Customers Bancorp has made certain equity investments through its wholly owned subsidiaries CB Green Ventures Pte Ltd. and CUBI India Ventures Pte Ltd.</span></div>
CY2021Q1	cubi	Number Of Branches NumberOfBranches	12	branch
CY2021Q1	us-gaap	Net Income Loss From Continuing Operations Available To Common Shareholders Basic NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic	71240000	USD
CY2020Q1	us-gaap	Net Income Loss From Continuing Operations Available To Common Shareholders Basic NetIncomeLossFromContinuingOperationsAvailableToCommonShareholdersBasic	4839000	USD
CY2021Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-38036000	USD
CY2020Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-5354000	USD
CY2021Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	33204000	USD
CY2020Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-515000	USD
CY2021Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	31883946	shares
CY2020Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	31391151	shares
CY2021Q1	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	957765	shares
CY2020Q1	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2021Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	32841711	shares
CY2020Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	31391151	shares
CY2021Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.23
CY2020Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.15
CY2021Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-1.19
CY2020Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.17
CY2021Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.04
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.02
CY2021Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.17
CY2020Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.15
CY2021Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-1.16
CY2020Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.17
CY2021Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.01
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.02
CY2021Q1	us-gaap	Oci Before Reclassifications Before Tax Attributable To Parent OciBeforeReclassificationsBeforeTaxAttributableToParent	12715000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Before Reclassifications Tax OtherComprehensiveIncomeLossBeforeReclassificationsTax	3306000	USD
CY2021Q1	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	9409000	USD
CY2021Q1	us-gaap	Reclassification From Aoci Current Period Before Tax Attributable To Parent ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent	-2360000	USD
CY2021Q1	us-gaap	Reclassification From Aoci Current Period Tax ReclassificationFromAociCurrentPeriodTax	-614000	USD
CY2021Q1	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	-1746000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	11155000	USD
CY2020Q1	us-gaap	Oci Before Reclassifications Before Tax Attributable To Parent OciBeforeReclassificationsBeforeTaxAttributableToParent	-36795000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Before Reclassifications Tax OtherComprehensiveIncomeLossBeforeReclassificationsTax	-9717000	USD
CY2020Q1	us-gaap	Oci Before Reclassifications Net Of Tax Attributable To Parent OciBeforeReclassificationsNetOfTaxAttributableToParent	-27078000	USD
CY2020Q1	us-gaap	Reclassification From Aoci Current Period Before Tax Attributable To Parent ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent	2496000	USD
CY2020Q1	us-gaap	Reclassification From Aoci Current Period Tax ReclassificationFromAociCurrentPeriodTax	649000	USD
CY2020Q1	us-gaap	Reclassification From Aoci Current Period Net Of Tax Attributable To Parent ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent	1847000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-28925000	USD
CY2021Q1	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1429715000	USD
CY2021Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	11028000	USD
CY2021Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	3666000	USD
CY2021Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1437077000	USD
CY2021Q1	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	4827000	USD
CY2021Q1	cubi	Investment Securitiesat Fair Value InvestmentSecuritiesatFairValue	1441904000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1174188000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	32890000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	647000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1206431000	USD
CY2020Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	3854000	USD
CY2020Q4	cubi	Investment Securitiesat Fair Value InvestmentSecuritiesatFairValue	1210285000	USD
CY2021Q1	us-gaap	Debt Securities Available For Sale Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss	4300000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss	4200000	USD
CY2021Q1	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	1000000.0	USD
CY2020Q1	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-1400000	USD
CY2021Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	353900000	USD
CY2021Q1	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	23600000	USD
CY2020Q1	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	4000000.0	USD
CY2021Q1	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	0	USD
CY2021Q1	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	0	USD
CY2021Q1	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	140681000	USD
CY2021Q1	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	141641000	USD
CY2021Q1	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	142991000	USD
CY2021Q1	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	144893000	USD
CY2021Q1	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	9935000	USD
CY2021Q1	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	9970000	USD
CY2021Q1	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1429715000	USD
CY2021Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1437077000	USD
CY2021Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	369291000	USD
CY2021Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	3666000	USD
CY2021Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	0	USD
CY2021Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	0	USD
CY2021Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	369291000	USD
CY2021Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	3666000	USD
CY2021Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions	30	security
CY2021Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	0	security
CY2021Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions	30	security
CY2021Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions	30	security
CY2020Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	16	security
CY2021Q1	us-gaap	Pledged Financial Instruments Not Separately Reported Securities Pledged PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledged	17600000	USD
CY2020Q4	us-gaap	Pledged Financial Instruments Not Separately Reported Securities Pledged PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledged	18800000	USD
CY2021Q1	cubi	Multi Family Commercial Loans Held For Sale MultiFamilyCommercialLoansHeldForSale	19251000	USD
CY2020Q4	cubi	Multi Family Commercial Loans Held For Sale MultiFamilyCommercialLoansHeldForSale	0	USD
CY2021Q1	cubi	Commercial Industrial Loans Held For Sale CommercialIndustrialLoansHeldForSale	0	USD
CY2020Q4	cubi	Commercial Industrial Loans Held For Sale CommercialIndustrialLoansHeldForSale	55683000	USD
CY2021Q1	cubi	Commercial Real Estate Non Owner Occupied Loans Held For Sale CommercialRealEstateNonOwnerOccupiedLoansHeldForSale	0	USD
CY2020Q4	cubi	Commercial Real Estate Non Owner Occupied Loans Held For Sale CommercialRealEstateNonOwnerOccupiedLoansHeldForSale	17251000	USD
CY2021Q1	cubi	Loans Receivable Held For Sale Net Not Part Of Disposal Group Commercial Real Estate1 LoansReceivableHeldForSaleNetNotPartOfDisposalGroupCommercialRealEstate1	19251000	USD
CY2020Q4	cubi	Loans Receivable Held For Sale Net Not Part Of Disposal Group Commercial Real Estate1 LoansReceivableHeldForSaleNetNotPartOfDisposalGroupCommercialRealEstate1	72934000	USD
CY2021Q1	cubi	Loans Receivable Held For Sale Net Not Part Of Disposal Group Consumer Home Equity1 LoansReceivableHeldForSaleNetNotPartOfDisposalGroupConsumerHomeEquity1	643000	USD
CY2020Q4	cubi	Loans Receivable Held For Sale Net Not Part Of Disposal Group Consumer Home Equity1 LoansReceivableHeldForSaleNetNotPartOfDisposalGroupConsumerHomeEquity1	643000	USD
CY2021Q1	cubi	Loans Receivable Held For Sale Net Not Part Of Disposal Group Mortgage1 LoansReceivableHeldForSaleNetNotPartOfDisposalGroupMortgage1	1205000	USD
CY2020Q4	cubi	Loans Receivable Held For Sale Net Not Part Of Disposal Group Mortgage1 LoansReceivableHeldForSaleNetNotPartOfDisposalGroupMortgage1	5509000	USD
CY2021Q1	cubi	Loans Receivable Held For Sale Net Not Part Of Disposal Group Installment Loans LoansReceivableHeldForSaleNetNotPartOfDisposalGroupInstallmentLoans	25007000	USD
CY2020Q4	cubi	Loans Receivable Held For Sale Net Not Part Of Disposal Group Installment Loans LoansReceivableHeldForSaleNetNotPartOfDisposalGroupInstallmentLoans	0	USD
CY2021Q1	cubi	Loans Receivable Held For Sale Net Not Part Of Disposal Group Consumer LoansReceivableHeldForSaleNetNotPartOfDisposalGroupConsumer	26855000	USD
CY2020Q4	cubi	Loans Receivable Held For Sale Net Not Part Of Disposal Group Consumer LoansReceivableHeldForSaleNetNotPartOfDisposalGroupConsumer	6152000	USD
CY2021Q1	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	46106000	USD
CY2020Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	79086000	USD
CY2021Q1	cubi	Loans Held For Sale Including Nonperforming Loans LoansHeldForSaleIncludingNonperformingLoans	600000	USD
CY2020Q4	cubi	Loans Held For Sale Including Nonperforming Loans LoansHeldForSaleIncludingNonperformingLoans	18500000	USD
CY2021Q1	cubi	Loansreceivablemortgagewarehouse Loansreceivablemortgagewarehouse	3407622000	USD
CY2020Q4	cubi	Loansreceivablemortgagewarehouse Loansreceivablemortgagewarehouse	3616432000	USD
CY2021Q1	cubi	Financing Receivable Before Allowance For Credit Loss Payment Protection Program Cares Act FinancingReceivableBeforeAllowanceForCreditLossPaymentProtectionProgramCARESAct	5178089000	USD
CY2020Q4	cubi	Financing Receivable Before Allowance For Credit Loss Payment Protection Program Cares Act FinancingReceivableBeforeAllowanceForCreditLossPaymentProtectionProgramCARESAct	4561365000	USD
CY2021Q1	us-gaap	Notes Receivable Gross NotesReceivableGross	7536489000	USD
CY2020Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	7575368000	USD
CY2021Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	128736000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	144176000	USD
CY2021Q1	us-gaap	Notes Receivable Net NotesReceivableNet	15993464000	USD
CY2020Q4	us-gaap	Notes Receivable Net NotesReceivableNet	15608989000	USD
CY2021Q1	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	133200000	USD
CY2020Q4	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	-54600000	USD
CY2021Q1	cubi	Loans Held For Sale Average Life From Purchase To Sale LoansHeldForSaleAverageLifeFromPurchaseToSale	P30D
CY2021Q1	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	60574000	USD
CY2021Q1	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	7475915000	USD
CY2021Q1	us-gaap	Notes Receivable Gross NotesReceivableGross	7536489000	USD
CY2020Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	62045000	USD
CY2020Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	7513323000	USD
CY2020Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	7575368000	USD
CY2021Q1	us-gaap	Financing Receivable Threshold Period Past Due FinancingReceivableThresholdPeriodPastDue	P30D
CY2021Q1	cubi	Financing Receivable Before Allowance For Credit Loss Payment Protection Program Cares Act FinancingReceivableBeforeAllowanceForCreditLossPaymentProtectionProgramCARESAct	5200000000	USD
CY2020Q4	cubi	Financing Receivable Before Allowance For Credit Loss Payment Protection Program Cares Act FinancingReceivableBeforeAllowanceForCreditLossPaymentProtectionProgramCARESAct	4600000000	USD
CY2021Q1	us-gaap	Financing Receivable Purchased With Credit Deterioration Amount At Purchase Price FinancingReceivablePurchasedWithCreditDeteriorationAmountAtPurchasePrice	12500000	USD
CY2020Q4	us-gaap	Financing Receivable Purchased With Credit Deterioration Amount At Purchase Price FinancingReceivablePurchasedWithCreditDeteriorationAmountAtPurchasePrice	13400000	USD
CY2021Q1	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	48081000	USD
CY2020Q4	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	40862000	USD
CY2020Q4	cubi	Financing Receivable Nonaccrual With Allowance FinancingReceivableNonaccrualWithAllowance	11177000	USD
CY2021Q1	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	42666000	USD
CY2021Q1	cubi	Financing Receivable Nonaccrual With Allowance FinancingReceivableNonaccrualWithAllowance	5415000	USD
CY2020Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	52039000	USD
CY2021Q1	us-gaap	Financing Receivable Accrued Interest Writeoff FinancingReceivableAccruedInterestWriteoff	16000	USD
CY2020Q1	us-gaap	Financing Receivable Accrued Interest Writeoff FinancingReceivableAccruedInterestWriteoff	1200000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	144176000	USD
CY2021Q1	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	14646000	USD
CY2021Q1	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	2125000	USD
CY2021Q1	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-2919000	USD
CY2021Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	128736000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	56379000	USD
CY2020Q1	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	19140000	USD
CY2020Q1	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	429000	USD
CY2020Q1	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	31786000	USD
CY2020Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	149283000	USD
CY2021Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	128700000	USD
CY2021Q1	us-gaap	Financing Receivable Allowance For Credit Losses Period Increase Decrease FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease	-15500000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	144200000	USD
CY2021Q1	cubi	Loans Receivables Gross Troubled Debt Restructurings LoansReceivablesGrossTroubledDebtRestructurings	16000000.0	USD
CY2020Q4	cubi	Loans Receivables Gross Troubled Debt Restructurings LoansReceivablesGrossTroubledDebtRestructurings	16100000	USD
CY2021Q1	cubi	Financing Receivable Impairment Minimum Performance Requirement Period FinancingReceivableImpairmentMinimumPerformanceRequirementPeriod	P6M
CY2021Q1	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	0	USD
CY2020Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	0	USD
CY2021Q1	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	28	Loan
CY2021Q1	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	725000	USD
CY2020Q1	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	16	Loan
CY2020Q1	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	775000	USD
CY2021Q1	cubi	Number Of Commitments To Lend Additional Funds For Troubled Debt Restructurings NumberOfCommitmentsToLendAdditionalFundsForTroubledDebtRestructurings	0	Commitment
CY2020Q4	cubi	Number Of Commitments To Lend Additional Funds For Troubled Debt Restructurings NumberOfCommitmentsToLendAdditionalFundsForTroubledDebtRestructurings	0	Commitment
CY2021Q1	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	20	Loan
CY2021Q1	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	354000	USD
CY2020Q1	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	6	Loan
CY2020Q1	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	692000	USD
CY2021Q1	us-gaap	Financing Receivable Purchased With Credit Deterioration Amount At Purchase Price FinancingReceivablePurchasedWithCreditDeteriorationAmountAtPurchasePrice	12500000	USD
CY2021Q1	us-gaap	Financing Receivable Originated In Current Fiscal Year FinancingReceivableOriginatedInCurrentFiscalYear	634369000	USD
CY2021Q1	us-gaap	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear	1385869000	USD
CY2021Q1	us-gaap	Financing Receivable Originated Two Years Before Latest Fiscal Year FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear	1373910000	USD
CY2021Q1	us-gaap	Financing Receivable Originated Three Years Before Latest Fiscal Year FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear	738407000	USD
CY2021Q1	us-gaap	Financing Receivable Originated Four Years Before Latest Fiscal Year FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear	930852000	USD
CY2021Q1	us-gaap	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear	1606409000	USD
CY2021Q1	us-gaap	Financing Receivable Revolving FinancingReceivableRevolving	866673000	USD
CY2021Q1	us-gaap	Financing Receivable Revolving Converted To Term Loan FinancingReceivableRevolvingConvertedToTermLoan	0	USD
CY2021Q1	us-gaap	Notes Receivable Gross NotesReceivableGross	7536489000	USD
CY2020Q4	us-gaap	Financing Receivable Originated In Current Fiscal Year FinancingReceivableOriginatedInCurrentFiscalYear	1515239000	USD
CY2020Q4	us-gaap	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear	1599431000	USD
CY2020Q4	us-gaap	Financing Receivable Originated Two Years Before Latest Fiscal Year FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear	786506000	USD
CY2020Q4	us-gaap	Financing Receivable Originated Three Years Before Latest Fiscal Year FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear	1055134000	USD
CY2020Q4	us-gaap	Financing Receivable Originated Four Years Before Latest Fiscal Year FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear	578390000	USD
CY2020Q4	us-gaap	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear	1130969000	USD
CY2020Q4	us-gaap	Financing Receivable Revolving FinancingReceivableRevolving	909699000	USD
CY2020Q4	us-gaap	Financing Receivable Revolving Converted To Term Loan FinancingReceivableRevolvingConvertedToTermLoan	0	USD
CY2020Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	7575368000	USD
CY2021Q1	us-gaap	Financing Receivable Significant Purchases FinancingReceivableSignificantPurchases	115849000	USD
CY2020Q1	us-gaap	Financing Receivable Significant Purchases FinancingReceivableSignificantPurchases	192256000	USD
CY2021Q1	us-gaap	Financing Receivable Significant Sales FinancingReceivableSignificantSales	39534000	USD
CY2020Q1	us-gaap	Financing Receivable Significant Sales FinancingReceivableSignificantSales	1822000	USD
CY2021Q1	cubi	Loans Heldforinvestment Purchase Priceasa Percentageof Loans Outstanding LoansHeldforinvestmentPurchasePriceasaPercentageofLoansOutstanding	1.010
CY2020Q1	cubi	Loans Heldforinvestment Purchase Priceasa Percentageof Loans Outstanding LoansHeldforinvestmentPurchasePriceasaPercentageofLoansOutstanding	1.006
CY2021Q1	us-gaap	Gain Loss On Sale Of Notes Receivable GainLossOnSaleOfNotesReceivable	1600000	USD
CY2020Q1	us-gaap	Gain Loss On Sale Of Notes Receivable GainLossOnSaleOfNotesReceivable	11000	USD
CY2021Q1	us-gaap	Loans Pledged As Collateral LoansPledgedAsCollateral	6800000000	USD
CY2020Q4	us-gaap	Loans Pledged As Collateral LoansPledgedAsCollateral	8500000000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Renewal Term LesseeOperatingLeaseRenewalTerm	P15Y
CY2021Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	15442000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	16578000	USD
CY2021Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	16829000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	18005000	USD
CY2021Q1	us-gaap	Operating Lease Cost OperatingLeaseCost	1117000	USD
CY2020Q1	us-gaap	Operating Lease Cost OperatingLeaseCost	1205000	USD
CY2020Q1	us-gaap	Variable Lease Cost VariableLeaseCost	0	USD
CY2021Q1	us-gaap	Variable Lease Cost VariableLeaseCost	0	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	3477000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	4509000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	4031000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	2957000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	1887000	USD
CY2021Q1	cubi	Lessee Operating Lease Liability To Be Paid After Year Four LesseeOperatingLeaseLiabilityToBePaidAfterYearFour	1465000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	18326000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	1497000	USD
CY2021Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	16829000	USD
CY2021Q1	us-gaap	Operating Lease Payments OperatingLeasePayments	1100000	USD
CY2020Q1	us-gaap	Operating Lease Payments OperatingLeasePayments	1300000	USD
CY2021Q1	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y6M
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y8M12D
CY2021Q1	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0289
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0290
CY2021Q1	us-gaap	Direct Financing Lease Lease Receivable DirectFinancingLeaseLeaseReceivable	104230000	USD
CY2020Q4	us-gaap	Direct Financing Lease Lease Receivable DirectFinancingLeaseLeaseReceivable	104982000	USD
CY2021Q1	us-gaap	Direct Financing Lease Residual Value Of Leased Asset DirectFinancingLeaseResidualValueOfLeasedAsset	9452000	USD
CY2020Q4	us-gaap	Direct Financing Lease Residual Value Of Leased Asset DirectFinancingLeaseResidualValueOfLeasedAsset	12988000	USD
CY2021Q1	us-gaap	Direct Financing Lease Unguaranteed Residual Asset DirectFinancingLeaseUnguaranteedResidualAsset	3807000	USD
CY2020Q4	us-gaap	Direct Financing Lease Unguaranteed Residual Asset DirectFinancingLeaseUnguaranteedResidualAsset	1229000	USD
CY2021Q1	cubi	Direct Financing Lease Deferred Initial Direct Costs DirectFinancingLeaseDeferredInitialDirectCosts	528000	USD
CY2020Q4	cubi	Direct Financing Lease Deferred Initial Direct Costs DirectFinancingLeaseDeferredInitialDirectCosts	560000	USD
CY2021Q1	us-gaap	Direct Financing Lease Deferred Selling Profit DirectFinancingLeaseDeferredSellingProfit	10433000	USD
CY2020Q4	us-gaap	Direct Financing Lease Deferred Selling Profit DirectFinancingLeaseDeferredSellingProfit	11175000	USD
CY2021Q1	us-gaap	Direct Financing Lease Net Investment In Lease DirectFinancingLeaseNetInvestmentInLease	107584000	USD
CY2020Q4	us-gaap	Direct Financing Lease Net Investment In Lease DirectFinancingLeaseNetInvestmentInLease	108584000	USD
CY2021Q1	cubi	Operating Lease Investmentin Lease Gross OperatingLeaseInvestmentinLeaseGross	136754000	USD
CY2020Q4	cubi	Operating Lease Investmentin Lease Gross OperatingLeaseInvestmentinLeaseGross	131791000	USD
CY2021Q1	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	33204000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	28919000	USD
CY2021Q1	cubi	Operating Lease Deferred Initial Direct Costs OperatingLeaseDeferredInitialDirectCosts	1113000	USD
CY2020Q4	cubi	Operating Lease Deferred Initial Direct Costs OperatingLeaseDeferredInitialDirectCosts	996000	USD
CY2021Q1	cubi	Operating Lease Net Investmentin Lease OperatingLeaseNetInvestmentinLease	104663000	USD
CY2020Q4	cubi	Operating Lease Net Investmentin Lease OperatingLeaseNetInvestmentinLease	103868000	USD
CY2021Q1	cubi	Net Investmentin Direct Financingand Operating Leases NetInvestmentinDirectFinancingandOperatingLeases	212247000	USD
CY2020Q4	cubi	Net Investmentin Direct Financingand Operating Leases NetInvestmentinDirectFinancingandOperatingLeases	212452000	USD
CY2021Q1	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due Within One Year Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate	850000000	USD
CY2021Q1	cubi	Federal Home Loan Bank Advances Short Term Interest Rate FederalHomeLoanBankAdvancesShortTermInterestRate	0.0121
CY2020Q4	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due Within One Year Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueWithinOneYearOfBalanceSheetDate	850000000	USD
CY2020Q4	cubi	Federal Home Loan Bank Advances Short Term Interest Rate FederalHomeLoanBankAdvancesShortTermInterestRate	0.0119
CY2021Q1	us-gaap	Federal Funds Purchased FederalFundsPurchased	365000000	USD
CY2021Q1	cubi	Federal Funds Purchased Interest Rate FederalFundsPurchasedInterestRate	0.0005
CY2020Q4	us-gaap	Federal Funds Purchased FederalFundsPurchased	250000000	USD
CY2020Q4	cubi	Federal Funds Purchased Interest Rate FederalFundsPurchasedInterestRate	0.0009
CY2021Q1	us-gaap	Short Term Borrowings ShortTermBorrowings	1215000000	USD
CY2020Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	1100000000	USD
CY2021Q1	cubi	Federal Reserve Bank Payment Protection Program Liquidity Facility Advances Cares Act FederalReserveBankPaymentProtectionProgramLiquidityFacilityAdvancesCARESAct	3284156000	USD
CY2021Q1	cubi	Cares Act Federal Reserve Bank Interest Rate CARESActFederalReserveBankInterestRate	0.0035
CY2020Q4	cubi	Federal Reserve Bank Payment Protection Program Liquidity Facility Advances Cares Act FederalReserveBankPaymentProtectionProgramLiquidityFacilityAdvancesCARESAct	4415016000	USD
CY2020Q4	cubi	Cares Act Federal Reserve Bank Interest Rate CARESActFederalReserveBankInterestRate	0.0035
CY2021Q1	us-gaap	Long Term Debt LongTermDebt	3284156000	USD
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	4415016000	USD
CY2021Q1	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Maximum Amount Available FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresMaximumAmountAvailable	2492783000	USD
CY2020Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Maximum Amount Available FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresMaximumAmountAvailable	2729516000	USD
CY2021Q1	cubi	Federal Reserve Bank Maximum Amount Available FederalReserveBankMaximumAmountAvailable	183124000	USD
CY2020Q4	cubi	Federal Reserve Bank Maximum Amount Available FederalReserveBankMaximumAmountAvailable	223299000	USD
CY2021Q1	us-gaap	Pledged Financial Instruments Not Separately Reported Loans Receivable Pledged As Collateral PledgedFinancialInstrumentsNotSeparatelyReportedLoansReceivablePledgedAsCollateral	3258271000	USD
CY2020Q4	us-gaap	Pledged Financial Instruments Not Separately Reported Loans Receivable Pledged As Collateral PledgedFinancialInstrumentsNotSeparatelyReportedLoansReceivablePledgedAsCollateral	3363364000	USD
CY2021Q1	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.04000
CY2021Q1	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.08000
CY2021Q1	us-gaap	Common Equity Tier One Capital CommonEquityTierOneCapital	1021018000	USD
CY2021Q1	cubi	Tier One Common Capitalto Risk Weighted Assets TierOneCommonCapitaltoRiskWeightedAssets	0.08774
CY2021Q1	us-gaap	Common Equity Tier One Capital Required For Capital Adequacy CommonEquityTierOneCapitalRequiredForCapitalAdequacy	523659000	USD
CY2021Q1	cubi	Tier One Common Capital Requiredfor Capital Adequacyto Risk Weighted Assets TierOneCommonCapitalRequiredforCapitalAdequacytoRiskWeightedAssets	0.04500
CY2021Q1	cubi	Common Equity Tier One Capital Requiredfor Basel Iii CommonEquityTierOneCapitalRequiredforBaselIII	814581000	USD
CY2021Q1	cubi	Tier One Common Capital Requiredfor Basel Ii Ito Risk Weighted Assets TierOneCommonCapitalRequiredforBaselIIItoRiskWeightedAssets	0.07000
CY2021Q1	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	1238489000	USD
CY2021Q1	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.10643
CY2021Q1	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy TierOneRiskBasedCapitalRequiredForCapitalAdequacy	698212000	USD
CY2021Q1	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.06000
CY2021Q1	cubi	Tier One Risk Based Capital Requiredfor Basel Iii TierOneRiskBasedCapitalRequiredforBaselIII	989134000	USD
CY2021Q1	cubi	Tier One Risk Based Capital Requiredfor Basel Ii Ito Risk Weighted Assets TierOneRiskBasedCapitalRequiredforBaselIIItoRiskWeightedAssets	0.08500
CY2021Q1	us-gaap	Capital Capital	1447285000	USD
CY2021Q1	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.12437
CY2021Q1	us-gaap	Capital Required For Capital Adequacy CapitalRequiredForCapitalAdequacy	930949000	USD
CY2021Q1	cubi	Capital Requiredfor Basel Iii CapitalRequiredforBaselIII	1221871000	USD
CY2021Q1	cubi	Capital Requiredfor Basel Ii Ito Risk Weighted Assets CapitalRequiredforBaselIIItoRiskWeightedAssets	0.10500
CY2021Q1	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	1238489000	USD
CY2021Q1	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.08478
CY2021Q1	us-gaap	Tier One Leverage Capital Required For Capital Adequacy TierOneLeverageCapitalRequiredForCapitalAdequacy	584359000	USD
CY2021Q1	cubi	Tier One Leverage Capital Requiredfor Basel Iii TierOneLeverageCapitalRequiredforBaselIII	584359000	USD
CY2021Q1	cubi	Tier One Leverage Capital Requiredfor Basel Ii Ito Average Assets TierOneLeverageCapitalRequiredforBaselIIItoAverageAssets	0.04000
CY2020Q4	us-gaap	Common Equity Tier One Capital CommonEquityTierOneCapital	954839000	USD
CY2020Q4	cubi	Tier One Common Capitalto Risk Weighted Assets TierOneCommonCapitaltoRiskWeightedAssets	0.08079
CY2020Q4	us-gaap	Common Equity Tier One Capital Required For Capital Adequacy CommonEquityTierOneCapitalRequiredForCapitalAdequacy	531844000	USD
CY2020Q4	cubi	Tier One Common Capital Requiredfor Capital Adequacyto Risk Weighted Assets TierOneCommonCapitalRequiredforCapitalAdequacytoRiskWeightedAssets	0.04500
CY2020Q4	cubi	Common Equity Tier One Capital Requiredfor Basel Iii CommonEquityTierOneCapitalRequiredforBaselIII	827312000	USD
CY2020Q4	cubi	Tier One Common Capital Requiredfor Basel Ii Ito Risk Weighted Assets TierOneCommonCapitalRequiredforBaselIIItoRiskWeightedAssets	0.07000
CY2020Q4	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	1172310000	USD
CY2020Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.09919
CY2020Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy TierOneRiskBasedCapitalRequiredForCapitalAdequacy	709125000	USD
CY2020Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.06000
CY2020Q4	cubi	Tier One Risk Based Capital Requiredfor Basel Iii TierOneRiskBasedCapitalRequiredforBaselIII	1004594000	USD
CY2020Q4	cubi	Tier One Risk Based Capital Requiredfor Basel Ii Ito Risk Weighted Assets TierOneRiskBasedCapitalRequiredforBaselIIItoRiskWeightedAssets	0.08500
CY2020Q4	us-gaap	Capital Capital	1401119000	USD
CY2020Q4	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.11855
CY2020Q4	us-gaap	Capital Required For Capital Adequacy CapitalRequiredForCapitalAdequacy	945500000	USD
CY2020Q4	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.08000
CY2020Q4	cubi	Capital Requiredfor Basel Iii CapitalRequiredforBaselIII	1240969000	USD
CY2020Q4	cubi	Capital Requiredfor Basel Ii Ito Risk Weighted Assets CapitalRequiredforBaselIIItoRiskWeightedAssets	0.10500
CY2020Q4	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	1172310000	USD
CY2020Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.08597
CY2020Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy TierOneLeverageCapitalRequiredForCapitalAdequacy	545485000	USD
CY2020Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.04000
CY2020Q4	cubi	Tier One Leverage Capital Requiredfor Basel Iii TierOneLeverageCapitalRequiredforBaselIII	545485000	USD
CY2020Q4	cubi	Tier One Leverage Capital Requiredfor Basel Ii Ito Average Assets TierOneLeverageCapitalRequiredforBaselIIItoAverageAssets	0.04000
CY2021Q1	cubi	Capital Conservation Bufferto Risk Weighted Assets Year Fourand Thereafter CapitalConservationBuffertoRiskWeightedAssetsYearFourandThereafter	0.02500
CY2021Q1	cubi	Loans Held For Sale Average Life From Purchase To Sale LoansHeldForSaleAverageLifeFromPurchaseToSale	P30D
CY2021Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	515364000	USD
CY2021Q1	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	515364000	USD
CY2021Q1	cubi	Derivative Lengthof Hedging Exposureto Variabilityin Future Cash Flows DerivativeLengthofHedgingExposuretoVariabilityinFutureCashFlows	P24M
CY2021Q1	us-gaap	Derivative Instruments Gain Loss Reclassification From Accumulated Oci To Income Estimated Net Amount To Be Transferred DerivativeInstrumentsGainLossReclassificationFromAccumulatedOCIToIncomeEstimatedNetAmountToBeTransferred	-1100000	USD
CY2021Q1	us-gaap	Federal Home Loan Bank Borrowings Fair Value Disclosure FederalHomeLoanBankBorrowingsFairValueDisclosure	850787000	USD
CY2021Q1	us-gaap	Other Borrowings OtherBorrowings	124138000	USD
CY2021Q1	cubi	Borrowings Fair Value Disclosure BorrowingsFairValueDisclosure	135571000	USD
CY2021Q1	us-gaap	Federal Funds Purchased FederalFundsPurchased	365000000	USD
CY2021Q1	us-gaap	Federal Funds Purchased Fair Value Disclosure FederalFundsPurchasedFairValueDisclosure	365000000	USD
CY2021Q1	us-gaap	Federal Home Loan Bank Advances Branch Of Fhlb Bank Amount Of Advances By Branch FederalHomeLoanBankAdvancesBranchOfFHLBBankAmountOfAdvancesByBranch	850000000	USD
CY2021Q1	us-gaap	Subordinated Debt SubordinatedDebt	181464000	USD
CY2021Q1	cubi	Subordinated Debt Fair Value Disclosure SubordinatedDebtFairValueDisclosure	197080000	USD
CY2021Q1	us-gaap	Derivative Liabilities DerivativeLiabilities	37536000	USD
CY2021Q1	us-gaap	Derivative Liabilities DerivativeLiabilities	37536000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	693354000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents Fair Value Disclosure CashAndCashEquivalentsFairValueDisclosure	693354000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1206431000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1206431000	USD
CY2020Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	3854000	USD
CY2020Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	3854000	USD
CY2020Q4	us-gaap	Other Borrowings OtherBorrowings	124037000	USD
CY2020Q4	cubi	Borrowings Fair Value Disclosure BorrowingsFairValueDisclosure	129120000	USD
CY2020Q4	us-gaap	Subordinated Debt SubordinatedDebt	181394000	USD
CY2020Q4	cubi	Subordinated Debt Fair Value Disclosure SubordinatedDebtFairValueDisclosure	193119000	USD
CY2020Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	98164000	USD
CY2020Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	98164000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Reclassification For Discontinuance Before Tax OtherComprehensiveIncomeLossCashFlowHedgeReclassificationForDiscontinuanceBeforeTax	-25900000	USD
CY2020Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	79086000	USD
CY2020Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	79086000	USD
CY2020Q4	us-gaap	Notes Receivable Net NotesReceivableNet	15608989000	USD
CY2020Q4	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	16222202000	USD
CY2021Q1	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	4827000	USD
CY2020Q4	us-gaap	Federal Home Loan Bank Stock And Federal Reserve Bank Stock FederalHomeLoanBankStockAndFederalReserveBankStock	71368000	USD
CY2020Q4	cubi	Federal Home Loan Bank Stock And Federal Reserve Bank Stock Fair Value FederalHomeLoanBankStockAndFederalReserveBankStockFairValue	71368000	USD
CY2020Q4	us-gaap	Derivative Assets DerivativeAssets	54223000	USD
CY2020Q4	us-gaap	Derivative Assets DerivativeAssets	54223000	USD
CY2020Q4	us-gaap	Deposits Deposits	11309929000	USD
CY2020Q4	us-gaap	Deposits Fair Value Disclosure DepositsFairValueDisclosure	11312494000	USD
CY2020Q4	cubi	Federal Reserve Bank Paycheck Protection Program Liquidity Facility Cares Act FederalReserveBankPaycheckProtectionProgramLiquidityFacilityCARESAct	4415016000	USD
CY2020Q4	cubi	Federal Reserve Bank Advances Fair Value FederalReserveBankAdvancesFairValue	4415016000	USD
CY2020Q4	us-gaap	Federal Funds Purchased FederalFundsPurchased	250000000	USD
CY2020Q4	us-gaap	Federal Funds Purchased Fair Value Disclosure FederalFundsPurchasedFairValueDisclosure	250000000	USD
CY2020Q4	us-gaap	Federal Home Loan Bank Advances Branch Of Fhlb Bank Amount Of Advances By Branch FederalHomeLoanBankAdvancesBranchOfFHLBBankAmountOfAdvancesByBranch	850000000	USD
CY2020Q4	us-gaap	Federal Home Loan Bank Borrowings Fair Value Disclosure FederalHomeLoanBankBorrowingsFairValueDisclosure	852442000	USD
CY2021Q1	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	4827000	USD
CY2021Q1	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	46106000	USD
CY2021Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1437077000	USD
CY2021Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1437077000	USD
CY2021Q1	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	46106000	USD
CY2021Q1	us-gaap	Notes Receivable Net NotesReceivableNet	15993464000	USD
CY2021Q1	us-gaap	Loans Receivable Fair Value Disclosure LoansReceivableFairValueDisclosure	16487438000	USD
CY2021Q1	us-gaap	Federal Home Loan Bank Stock And Federal Reserve Bank Stock FederalHomeLoanBankStockAndFederalReserveBankStock	69420000	USD
CY2021Q1	cubi	Federal Home Loan Bank Stock And Federal Reserve Bank Stock Fair Value FederalHomeLoanBankStockAndFederalReserveBankStockFairValue	69420000	USD
CY2021Q1	us-gaap	Derivative Assets DerivativeAssets	36502000	USD
CY2021Q1	us-gaap	Derivative Assets DerivativeAssets	36502000	USD
CY2021Q1	us-gaap	Deposits Deposits	12472440000	USD
CY2021Q1	us-gaap	Deposits Fair Value Disclosure DepositsFairValueDisclosure	12473798000	USD
CY2021Q1	cubi	Federal Reserve Bank Paycheck Protection Program Liquidity Facility Cares Act FederalReserveBankPaycheckProtectionProgramLiquidityFacilityCARESAct	3284156000	USD
CY2021Q1	cubi	Federal Reserve Bank Advances Fair Value FederalReserveBankAdvancesFairValue	3284156000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	9113000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-20346000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	-25926000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	-1478000	USD
CY2021Q1	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	36400000	USD
CY2021Q1	us-gaap	Loss Contingency Disclosures LossContingencyDisclosures	LOSS CONTINGENCIES<div style="margin-top:9pt;text-align:justify"><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><div style="margin-top:9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Lifestyle Healthcare Group, Inc. Matter</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:115%">On January 9, 2017, Lifestyle Healthcare Group, Inc., et al (“Plaintiffs”) filed a Complaint captioned </span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:115%">Lifestyle Healthcare Group, Inc.; Fred Rappaport; Victoria Rappaport; Lifestyle Management Group, LLC Trading as Lifestyle Real Estate I, LP; Lifestyle Real Estate I GP, LLC; Daniel Muck; Lifestyle Management Group, LLC; Lifestyle Management Group, LLC Trading as Lifestyle I, LP D/B/A Lifestyle Medspa, Plaintiffs (“Lifestyle Parties”) v. Customers Bank, Robert White; Saldutti Law, LLC a/k/a Saldutti Law Group; Robert L. Saldutti, Esquire; and Michael Fuoco, Civil Action No. 01206, in the First Judicial District of Pennsylvania, Court of Common Pleas of Philadelphia</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:115%">. In this Complaint, the Plaintiffs generally allege wrongful use of civil proceedings and abuse of process in connection with a case filed and later dismissed in federal court, titled, Customers Bank v. Fred Rappaport, et al., U.S.D.C.E.D. Pa., No. 15-6145. On January 30, 2017, Customers Bank filed Preliminary Objections to the Complaint seeking dismissal of Plaintiff’s claims against Customers Bank and Robert White, named as co-defendants. In response to the Preliminary Objections, Lifestyle filed an Amended Complaint against Customers Bank and Robert White. Customers Bank filed Preliminary Objections to the Second Amended Complaint seeking dismissal of Plaintiff's claim against Customers Bank and Robert White, named as co-defendants. The Court dismissed certain counts and determined to allow certain other counts to proceed. On September 17, 2020, a Stipulation of Dismissal with Prejudice was filed with the Court as a result of the voluntary resolution of the matter by and between Plaintiffs and defendants, Customers Bank, Robert White and Michael Fuoco only.</span></div><div style="margin-top:9pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">United States Department of Education Matter</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%">In third quarter 2018, Customers received a Final Program Review Determination ("FPRD") letter dated September 5, 2018 from the ED regarding a focused program review of Higher One's/Customers Bank's administration, as a third party servicer, of the programs authorized pursuant to Title IV of the Higher Education Act of 1965. The ED program review covered the award years beginning in 2013 through the FPRD issuance date, including the time period when Higher One was acting as the third party servicer prior to Customers' acquisition of the Disbursement business on June 15, 2016. The FPRD determined that, with respect to students enrolled at specified partner institutions, Higher One/Customers did not provide convenient fee-free access to ATMs or bank branch offices in such locations as required by the ED’s cash management regulations. Those regulations, which were in effect during the period covered by the program review and were revised during that period, seek, among other purposes, to ensure that students can make fee-free cash </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%">withdrawals. The FPRD determined that students incurred prohibited costs in accessing Title IV credit balance funds, and the FPRD classifies those costs as financial liabilities of Customers. The FPRD also requires Customers to take prospective action to increase ATM access for students at certain of its partner institutions. Customers disagreed with the FPRD and appealed the asserted financial liabilities of $6.5 million, and a request for review has been submitted to trigger an administrative process before the ED’s Office of Hearing and Appeals.</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%">On March 26, 2020, the ED and Customers filed a Joint Motion to Dismiss with Prejudice (the "Joint Motion") with the United States Department of Education. The Joint Motion states that the ED and Customers reached an agreement that resolves the liabilities at issue in the appeal. The Joint Motion was granted on April 27, 2020. As part of the settlement, the liabilities assessed in the FPRD were reduced to $3.0 million (the "settlement amount"). Customers had previously recorded a liability in the amount of $1.0 million during third quarter 2019 and increased its liability by an additional $1.0 million in first quarter 2020. The remaining $1.0 million is expected to be funded from funds in an escrow account set-up at the time of Customers' acquisition of the Disbursement business from Higher One in 2016.</span></div><div style="margin-top:9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Bureau of the Fiscal Service Notice of Direct Debit (U.S. Treasury Check Reclamation)</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%">On June 21, 2019, Customers received a Notice of Direct Debit (U.S. Treasury Check Reclamation) from the Bureau of the Fiscal Service (“Reclamation Notice”). The Reclamation Notice represented a demand to Customers for the return of funds on a U.S. Treasury check for approximately $5.4 million. Customers filed a written protest pursuant to Code of Federal Regulations, Title 31, Chapter II, Part 240, which resulted in a suspension of the direct debit by the Bureau of the Fiscal Service. On January 31, 2020, Customers received an Abandonment Notice from the Bureau of Fiscal Service instructing Customers to disregard the Notice of Direct Debit as the Bureau of Fiscal Service would not be seeking reclamation of these funds.</span></div><div style="margin-top:9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Specialty’s Café Bakery, Inc. Matter</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:115%">On May 27, 2020, the appointed Chapter 7 Trustee for Specialty’s Café Bakery, Inc. (“Debtor”) filed a voluntary petition for relief under Chapter 7 of the Bankruptcy Code in the United Stated Bankruptcy Court for the Central District of California. On October 28, 2020, the Trustee, as plaintiff, filed her amended adversary complaint (“Adversary Complaint”) against Customers Bank and the SBA seeking to avoid and recover for the benefit of the Debtor’s estate and its creditors the payment made by the Debtor to Customers Bank in the amount of $8.1 million in satisfaction of a Payroll Protection Program loan made by Customers Bank to the Debtor (the “PPP Loan Payment”). The Trustee seeks to avoid and recover the entire PPP Loan Payment from the Bank under the authority provided in 11 U.S.C. §547 and §550, which together permit a trustee of a bankruptcy debtor to avoid and recover, for a more equitable distribution among all creditors, certain transfers made within ninety (90) days before the filing of the bankruptcy petition. The Bank intends to vigorously defend itself against the Trustee’s Adversary Complaint and is currently unable to reasonably determine the likelihood of loss nor estimate a possible range of loss.</span></div>

Files In Submission

Name	View Source	Status
0001488813-21-000123-index-headers.html	Edgar Link	pending
0001488813-21-000123-index.html	Edgar Link	pending
0001488813-21-000123.txt	Edgar Link	pending
0001488813-21-000123-xbrl.zip	Edgar Link	pending
cubi-20210331.htm	Edgar Link	pending
cubi-20210331.xsd	Edgar Link	pending
cubi-20210331_cal.xml	Edgar Link	unprocessable
cubi-20210331_def.xml	Edgar Link	unprocessable
cubi-20210331_g1.jpg	Edgar Link	pending
cubi-20210331_htm.xml	Edgar Link	completed
cubi-20210331_lab.xml	Edgar Link	unprocessable
cubi-20210331_pre.xml	Edgar Link	unprocessable
ex-3113_31x2021.htm	Edgar Link	pending
ex-3123_31x2021.htm	Edgar Link	pending
ex-3213_31x2021.htm	Edgar Link	pending
ex-3223_31x2021.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R45.htm	Edgar Link	pending
R46.htm	Edgar Link	pending
R47.htm	Edgar Link	pending
R48.htm	Edgar Link	pending
R49.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R50.htm	Edgar Link	pending
R51.htm	Edgar Link	pending
R52.htm	Edgar Link	pending
R53.htm	Edgar Link	pending
R54.htm	Edgar Link	pending
R55.htm	Edgar Link	pending
R56.htm	Edgar Link	pending
R57.htm	Edgar Link	pending
R58.htm	Edgar Link	pending
R59.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R60.htm	Edgar Link	pending
R61.htm	Edgar Link	pending
R62.htm	Edgar Link	pending
R63.htm	Edgar Link	pending
R64.htm	Edgar Link	pending
R65.htm	Edgar Link	pending
R66.htm	Edgar Link	pending
R67.htm	Edgar Link	pending
R68.htm	Edgar Link	pending
R69.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R70.htm	Edgar Link	pending
R71.htm	Edgar Link	pending
R72.htm	Edgar Link	pending
R73.htm	Edgar Link	pending
R74.htm	Edgar Link	pending
R75.htm	Edgar Link	pending
R76.htm	Edgar Link	pending
R77.htm	Edgar Link	pending
R78.htm	Edgar Link	pending
R79.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R80.htm	Edgar Link	pending
R81.htm	Edgar Link	pending
R82.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
R9999.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$CUBI
Customers Bancorp, Inc. Stock $cubi

2021 Q1 Form 10-Q Financial Statement

#000148881321000123 Filed on May 10, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CUBI Customers Bancorp, Inc. Stock $cubi

2021 Q1 Form 10-Q Financial Statement

#000148881321000123 Filed on May 10, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CUBI
Customers Bancorp, Inc. Stock $cubi