$CATY
CATHAY GENERAL BANCORP Stock $caty

$caty Overview Financials Valuation SEC Filings Company Website

2024 Q4 Form 10-Q Financial Statement

#000143774924034150 Filed on November 08, 2024

Income Statement

Concept	2024 Q4	2024 Q3
Revenue		$13.83M
YoY Change		17.27%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization		$1.769M
YoY Change		-11.55%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense
YoY Change
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income		$78.15M
YoY Change		-15.51%
Income Tax		$10.64M
% Of Pretax Income		13.61%
Net Earnings		$67.51M
YoY Change		-18.04%
Net Earnings / Revenue		488.21%
Basic Earnings Per Share		$0.94
Diluted Earnings Per Share		$0.94
COMMON SHARES
Basic Shares Outstanding	71.20M	72.17M
Diluted Shares Outstanding		72.03M

Balance Sheet

Concept	2024 Q4	2024 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents		$1.339B
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		$119.7M
YoY Change		31.49%
Goodwill		$375.7M
YoY Change		0.0%
Intangibles		$3.590M
YoY Change		-24.02%
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		$23.27B
YoY Change		1.88%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses		$32.91M
YoY Change		-0.28%
Deferred Revenue
YoY Change
Short-Term Debt
YoY Change
Long-Term Debt Due		$0.00
YoY Change
Total Short-Term Liabilities		$32.91M
YoY Change		-0.28%
LONG-TERM LIABILITIES
Long-Term Debt		$136.9M
YoY Change		-3.58%
Other Long-Term Liabilities		$258.3M
YoY Change		-29.03%
Total Long-Term Liabilities		$395.2M
YoY Change		-21.89%
TOTAL LIABILITIES
Total Short-Term Liabilities		$32.91M
Total Long-Term Liabilities		$395.2M
Total Liabilities		$20.44B
YoY Change		1.18%
SHAREHOLDERS EQUITY
Retained Earnings		$2.632B
YoY Change		7.77%
Common Stock		$916.0K
YoY Change		0.33%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity		$2.830B
YoY Change
Total Liabilities & Shareholders Equity		$23.27B
YoY Change		1.88%

Cashflow Statement

Concept	2024 Q4	2024 Q3
OPERATING ACTIVITIES
Net Income		$67.51M
YoY Change		-18.04%
Depreciation, Depletion And Amortization		$1.769M
YoY Change		-11.55%
Cash From Operating Activities		$81.25M
YoY Change		-24.14%
INVESTING ACTIVITIES
Capital Expenditures		$1.205M
YoY Change		100.83%
Acquisitions
YoY Change
Other Investing Activities		$146.7M
YoY Change		-204.39%
Cash From Investing Activities		$145.5M
YoY Change		-203.02%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities		7.051M
YoY Change		-102.47%
NET CHANGE
Cash From Operating Activities		81.25M
Cash From Investing Activities		145.5M
Cash From Financing Activities		7.051M
Net Change In Cash		233.8M
YoY Change		-173.21%
FREE CASH FLOW
Cash From Operating Activities		$81.25M
Capital Expenditures		$1.205M
Free Cash Flow		$80.04M
YoY Change		-24.84%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Entity Registrant Name EntityRegistrantName	Cathay General Bancorp
	dei	Entity Central Index Key EntityCentralIndexKey	0000861842
	caty	Average Excess Balances Maintained With Federal Reserve Bank AverageExcessBalancesMaintainedWithFederalReserveBank	989800000	usd
CY2023	caty	Average Excess Balances Maintained With Federal Reserve Bank AverageExcessBalancesMaintainedWithFederalReserveBank	1090000000.00	usd
CY2024Q3	us-gaap	Margin Deposit Assets MarginDepositAssets	35300000	usd
CY2023Q4	us-gaap	Margin Deposit Assets MarginDepositAssets	53800000	usd
CY2024Q3	us-gaap	Restricted Cash RestrictedCash	2500000	usd
CY2023Q4	us-gaap	Restricted Cash RestrictedCash	6400000	usd
CY2024Q3	us-gaap	Net Income Loss NetIncomeLoss	67514000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	82371000	usd
	us-gaap	Net Income Loss NetIncomeLoss	205778000	usd
	us-gaap	Net Income Loss NetIncomeLoss	271598000	usd
CY2024Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	71786624
CY2023Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	72568518
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	72370995
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	72546149
CY2024Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	245832
CY2023Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	321896
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	236555
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	301758
CY2024Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	72032456
CY2023Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	72890414
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	72607550
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	72847907
CY2024Q3	caty	Average Shares Of Stock Options And Restricted Stock Units With Anti Dilutive Effect AverageSharesOfStockOptionsAndRestrictedStockUnitsWithAntiDilutiveEffect	309
CY2023Q3	caty	Average Shares Of Stock Options And Restricted Stock Units With Anti Dilutive Effect AverageSharesOfStockOptionsAndRestrictedStockUnitsWithAntiDilutiveEffect	0
	caty	Average Shares Of Stock Options And Restricted Stock Units With Anti Dilutive Effect AverageSharesOfStockOptionsAndRestrictedStockUnitsWithAntiDilutiveEffect	11464
	caty	Average Shares Of Stock Options And Restricted Stock Units With Anti Dilutive Effect AverageSharesOfStockOptionsAndRestrictedStockUnitsWithAntiDilutiveEffect	2098
CY2024Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.94
CY2023Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.14
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.84
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.74
CY2024Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.94
CY2023Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.13
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.83
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.73
CY2024Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	1242046
CY2024Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1602696000	usd
CY2024Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	1249000	usd
CY2024Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	95589000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1508356000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1726080000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	515000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	122025000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1604570000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss	4500000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss	5500000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	564646000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	564312000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	182986000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	177692000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	119016000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	113945000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	736048000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	652407000	usd
CY2024Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1602696000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1508356000	usd
CY2024Q3	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	4300000	usd
CY2023Q3	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-6200000	usd
	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-6200000	usd
	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	9300000	usd
CY2024Q3	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	35700000	usd
CY2023Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	40400000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	21164000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	27000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	877147000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	95562000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	898311000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	95589000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	132580000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	680000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	964495000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	121345000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	1097075000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	122025000	usd
CY2024Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	177	pure
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	192	pure
CY2024Q3	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0	usd
	us-gaap	Debt Securities Held To Maturity Transfer To Available For Sale Allowance For Credit Loss Expense DebtSecuritiesHeldToMaturityTransferToAvailableForSaleAllowanceForCreditLossExpense	0	usd
CY2024Q3	caty	Pledged Investment Securities PledgedInvestmentSecurities	18400000	usd
CY2023Q4	caty	Pledged Investment Securities PledgedInvestmentSecurities	134200000	usd
	dei	Amendment Flag AmendmentFlag	false
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2024
CY2024Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1602696000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1726080000	usd
CY2024Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2023Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2024Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2023Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2024Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000
CY2024Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	91601352
CY2024Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	71355869
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	91392480
CY2023Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	72668927
CY2024Q3	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	20245483
CY2023Q4	us-gaap	Treasury Stock Common Shares TreasuryStockCommonShares	18723553
CY2024Q3	caty	Number Of Limited Partnerships In Housing Investments NumberOfLimitedPartnershipsInHousingInvestments	11	pure
CY2024Q3	us-gaap	Debt Securities Held To Maturity Transfer To Available For Sale Allowance For Credit Loss Expense DebtSecuritiesHeldToMaturityTransferToAvailableForSaleAllowanceForCreditLossExpense	0	usd
CY2024Q3	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	0	usd
	caty	Loans Adjustments To Record Loans At The Lowerofcost LoansAdjustmentsToRecordLoansAtTheLowerofcost	0	usd
CY2024Q3	caty	Loans Fair Value Adjustment LoansFairValueAdjustment	0	usd
CY2024Q3	caty	Loans Adjustments To Record Loans At The Lowerofcost LoansAdjustmentsToRecordLoansAtTheLowerofcost	0	usd
	us-gaap	Financing Receivable Reclassification To Held For Sale FinancingReceivableReclassificationToHeldForSale	0	usd
CY2023Q4	us-gaap	Goodwill Goodwill	375700000	usd
CY2023	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	usd
	ecd	Rule10b51 Arr Adopted Flag Rule10b51ArrAdoptedFlag	false
	ecd	Non Rule10b51 Arr Adopted Flag NonRule10b51ArrAdoptedFlag	false
	ecd	Rule10b51 Arr Trmntd Flag Rule10b51ArrTrmntdFlag	false
	ecd	Non Rule10b51 Arr Trmntd Flag NonRule10b51ArrTrmntdFlag	false
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2024-09-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	001-31830
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	95-4274680
	dei	Entity Address Address Line1 EntityAddressAddressLine1	777 North Broadway
	dei	Entity Address City Or Town EntityAddressCityOrTown	Los Angeles
	dei	Entity Address State Or Province EntityAddressStateOrProvince	CA
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	90012
	dei	City Area Code CityAreaCode	213
	dei	Local Phone Number LocalPhoneNumber	625-4700
	dei	Security12b Title Security12bTitle	Common Stock
	dei	Trading Symbol TradingSymbol	CATY
	dei	Security Exchange Name SecurityExchangeName	NASDAQ
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
CY2024Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	71198632
CY2024Q3	us-gaap	Cash And Due From Banks CashAndDueFromBanks	182542000	usd
CY2023Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	173988000	usd
CY2024Q3	caty	Short Term Investments And Interest Bearing Deposits ShortTermInvestmentsAndInterestBearingDeposits	1156223000	usd
CY2023Q4	caty	Short Term Investments And Interest Bearing Deposits ShortTermInvestmentsAndInterestBearingDeposits	654813000	usd
CY2024Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1508356000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1604570000	usd
CY2024Q3	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	5190000	usd
CY2023Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	0	usd
CY2024Q3	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	19373593000	usd
CY2023Q4	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	19548140000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	163733000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	154562000	usd
CY2024Q3	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	-10505000	usd
CY2023Q4	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	-10720000	usd
CY2024Q3	us-gaap	Notes Receivable Net NotesReceivableNet	19199355000	usd
CY2023Q4	us-gaap	Notes Receivable Net NotesReceivableNet	19382858000	usd
CY2024Q3	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	35741000	usd
CY2023Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	40406000	usd
CY2024Q3	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	17250000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	17746000	usd
CY2024Q3	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	18277000	usd
CY2023Q4	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	19441000	usd
CY2024Q3	caty	Affordable Housing Investments And Alternative Energy Partnerships Net AffordableHousingInvestmentsAndAlternativeEnergyPartnershipsNet	280091000	usd
CY2023Q4	caty	Affordable Housing Investments And Alternative Energy Partnerships Net AffordableHousingInvestmentsAndAlternativeEnergyPartnershipsNet	315683000	usd
CY2024Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	89158000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	91097000	usd
CY2024Q3	us-gaap	Due From Customer Acceptances DueFromCustomerAcceptances	12043000	usd
CY2023Q4	us-gaap	Due From Customer Acceptances DueFromCustomerAcceptances	3264000	usd
CY2024Q3	us-gaap	Interest Receivable InterestReceivable	95351000	usd
CY2023Q4	us-gaap	Interest Receivable InterestReceivable	97673000	usd
CY2024Q3	us-gaap	Goodwill Goodwill	375696000	usd
CY2023Q4	us-gaap	Goodwill Goodwill	375696000	usd
CY2024Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	3590000	usd
CY2023Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	4461000	usd
CY2024Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	30543000	usd
CY2023Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	32076000	usd
CY2024Q3	us-gaap	Other Assets OtherAssets	265037000	usd
CY2023Q4	us-gaap	Other Assets OtherAssets	267762000	usd
CY2024Q3	us-gaap	Assets Assets	23274443000	usd
CY2023Q4	us-gaap	Assets Assets	23081534000	usd
CY2024Q3	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	3253823000	usd
CY2023Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	3529018000	usd
CY2024Q3	us-gaap	Deposits Negotiable Order Of Withdrawal Now DepositsNegotiableOrderOfWithdrawalNOW	2093861000	usd
CY2023Q4	us-gaap	Deposits Negotiable Order Of Withdrawal Now DepositsNegotiableOrderOfWithdrawalNOW	2370685000	usd
CY2024Q3	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	3134460000	usd
CY2023Q4	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	3049754000	usd
CY2024Q3	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	1215974000	usd
CY2023Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	1039203000	usd
CY2024Q3	us-gaap	Time Deposits TimeDeposits	10245823000	usd
CY2023Q4	us-gaap	Time Deposits TimeDeposits	9336787000	usd
CY2024Q3	us-gaap	Deposits Deposits	19943941000	usd
CY2023Q4	us-gaap	Deposits Deposits	19325447000	usd
CY2024Q3	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	60000000	usd
CY2023Q4	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	540000000	usd
CY2024Q3	caty	Other Borrowings For Affordable Housing Investments OtherBorrowingsForAffordableHousingInvestments	17783000	usd
CY2023Q4	caty	Other Borrowings For Affordable Housing Investments OtherBorrowingsForAffordableHousingInvestments	15787000	usd
CY2024Q3	us-gaap	Long Term Debt LongTermDebt	119136000	usd
CY2023Q4	us-gaap	Long Term Debt LongTermDebt	119136000	usd
CY2024Q3	us-gaap	Bank Acceptances Executed And Outstanding BankAcceptancesExecutedAndOutstanding	12043000	usd
CY2023Q4	us-gaap	Bank Acceptances Executed And Outstanding BankAcceptancesExecutedAndOutstanding	3264000	usd
CY2024Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	32906000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	34797000	usd
CY2024Q3	us-gaap	Other Liabilities OtherLiabilities	258321000	usd
CY2023Q4	us-gaap	Other Liabilities OtherLiabilities	306528000	usd
CY2024Q3	us-gaap	Liabilities Liabilities	20444130000	usd
CY2023Q4	us-gaap	Liabilities Liabilities	20344959000	usd
CY2024Q3	us-gaap	Common Stock Value CommonStockValue	916000	usd
CY2023Q4	us-gaap	Common Stock Value CommonStockValue	914000	usd
CY2024Q3	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	991362000	usd
CY2023Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	987953000	usd
CY2024Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-66453000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-85416000	usd
CY2024Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	2632315000	usd
CY2023Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	2500341000	usd
CY2024Q3	us-gaap	Treasury Stock Common Value TreasuryStockCommonValue	727827000	usd
CY2023Q4	us-gaap	Treasury Stock Common Value TreasuryStockCommonValue	667217000	usd
CY2024Q3	us-gaap	Stockholders Equity StockholdersEquity	2830313000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	2736575000	usd
CY2024Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	23274443000	usd
CY2023Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	23081534000	usd
CY2024Q3	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	310311000	usd
CY2023Q3	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	293108000	usd
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	916175000	usd
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	827765000	usd
CY2024Q3	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	15125000	usd
CY2023Q3	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	12698000	usd
	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	45720000	usd
	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	36832000	usd
CY2024Q3	caty	Dividend Income From Federal Home Loan Bank Stock DividendIncomeFromFederalHomeLoanBankStock	375000	usd
CY2023Q3	caty	Dividend Income From Federal Home Loan Bank Stock DividendIncomeFromFederalHomeLoanBankStock	355000	usd
	caty	Dividend Income From Federal Home Loan Bank Stock DividendIncomeFromFederalHomeLoanBankStock	1305000	usd
	caty	Dividend Income From Federal Home Loan Bank Stock DividendIncomeFromFederalHomeLoanBankStock	957000	usd
CY2024Q3	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	13680000	usd
CY2023Q3	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	17307000	usd
	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	41793000	usd
	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	43405000	usd
CY2024Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	339491000	usd
CY2023Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	323468000	usd
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	1004993000	usd
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	908959000	usd
CY2024Q3	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	119786000	usd
CY2023Q3	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	90022000	usd
	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	347408000	usd
	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	234171000	usd
CY2024Q3	us-gaap	Interest Expense Other Domestic Deposits InterestExpenseOtherDomesticDeposits	45918000	usd
CY2023Q3	us-gaap	Interest Expense Other Domestic Deposits InterestExpenseOtherDomesticDeposits	38207000	usd
	us-gaap	Interest Expense Other Domestic Deposits InterestExpenseOtherDomesticDeposits	133218000	usd
	us-gaap	Interest Expense Other Domestic Deposits InterestExpenseOtherDomesticDeposits	92683000	usd
CY2024Q3	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Long Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm	1885000	usd
CY2023Q3	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Long Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm	6779000	usd
	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Long Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm	13517000	usd
	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Long Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm	14875000	usd
CY2024Q3	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	2351000	usd
CY2023Q3	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	1726000	usd
	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	5935000	usd
	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	4721000	usd
CY2024Q3	us-gaap	Interest Expense Short Term Borrowings Excluding Federal Funds And Securities Sold Under Agreements To Repurchase InterestExpenseShortTermBorrowingsExcludingFederalFundsAndSecuritiesSoldUnderAgreementsToRepurchase	396000	usd
CY2023Q3	us-gaap	Interest Expense Short Term Borrowings Excluding Federal Funds And Securities Sold Under Agreements To Repurchase InterestExpenseShortTermBorrowingsExcludingFederalFundsAndSecuritiesSoldUnderAgreementsToRepurchase	1094000	usd
	us-gaap	Interest Expense Short Term Borrowings Excluding Federal Funds And Securities Sold Under Agreements To Repurchase InterestExpenseShortTermBorrowingsExcludingFederalFundsAndSecuritiesSoldUnderAgreementsToRepurchase	1872000	usd
	us-gaap	Interest Expense Short Term Borrowings Excluding Federal Funds And Securities Sold Under Agreements To Repurchase InterestExpenseShortTermBorrowingsExcludingFederalFundsAndSecuritiesSoldUnderAgreementsToRepurchase	2901000	usd
CY2024Q3	us-gaap	Interest Expense Operating InterestExpenseOperating	170336000	usd
CY2023Q3	us-gaap	Interest Expense Operating InterestExpenseOperating	137828000	usd
	us-gaap	Interest Expense Operating InterestExpenseOperating	501950000	usd
	us-gaap	Interest Expense Operating InterestExpenseOperating	349351000	usd
CY2024Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	169155000	usd
CY2023Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	185640000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	503043000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	559608000	usd
CY2024Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	14500000	usd
CY2023Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	7000000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	23000000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	24255000	usd
CY2024Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	154655000	usd
CY2023Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	178640000	usd
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	480043000	usd
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	535353000	usd
CY2024Q3	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	4253000	usd
CY2023Q3	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	-6218000	usd
	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	-6204000	usd
	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	9298000	usd
CY2024Q3	us-gaap	Debt Securities Gain Loss DebtSecuritiesGainLoss	0	usd
CY2023Q3	us-gaap	Debt Securities Gain Loss DebtSecuritiesGainLoss	0	usd
	us-gaap	Debt Securities Gain Loss DebtSecuritiesGainLoss	1107000	usd
	us-gaap	Debt Securities Gain Loss DebtSecuritiesGainLoss	-3000000	usd
CY2024Q3	caty	Letter Of Credit Commissions LetterOfCreditCommissions	2081000	usd
CY2023Q3	caty	Letter Of Credit Commissions LetterOfCreditCommissions	1738000	usd
	caty	Letter Of Credit Commissions LetterOfCreditCommissions	5686000	usd
	caty	Letter Of Credit Commissions LetterOfCreditCommissions	4972000	usd
CY2024Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	5914000	usd
CY2023Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	5631000	usd
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	16841000	usd
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	16226000	usd
CY2024Q3	us-gaap	Noninterest Income NoninterestIncome	20365000	usd
CY2023Q3	us-gaap	Noninterest Income NoninterestIncome	7837000	usd
	us-gaap	Noninterest Income NoninterestIncome	40191000	usd
	us-gaap	Noninterest Income NoninterestIncome	45191000	usd
CY2024Q3	us-gaap	Salaries Wages And Officers Compensation SalariesWagesAndOfficersCompensation	40859000	usd
CY2023Q3	us-gaap	Salaries Wages And Officers Compensation SalariesWagesAndOfficersCompensation	38774000	usd
	us-gaap	Salaries Wages And Officers Compensation SalariesWagesAndOfficersCompensation	124850000	usd
	us-gaap	Salaries Wages And Officers Compensation SalariesWagesAndOfficersCompensation	114048000	usd
CY2024Q3	us-gaap	Occupancy Net OccupancyNet	5938000	usd
CY2023Q3	us-gaap	Occupancy Net OccupancyNet	5851000	usd
	us-gaap	Occupancy Net OccupancyNet	17557000	usd
	us-gaap	Occupancy Net OccupancyNet	16883000	usd
CY2024Q3	us-gaap	Equipment Expense EquipmentExpense	4753000	usd
CY2023Q3	us-gaap	Equipment Expense EquipmentExpense	4387000	usd
	us-gaap	Equipment Expense EquipmentExpense	15212000	usd
	us-gaap	Equipment Expense EquipmentExpense	12899000	usd
CY2024Q3	us-gaap	Professional Fees ProfessionalFees	7021000	usd
CY2023Q3	us-gaap	Professional Fees ProfessionalFees	7906000	usd
	us-gaap	Professional Fees ProfessionalFees	22225000	usd
	us-gaap	Professional Fees ProfessionalFees	24212000	usd
CY2024Q3	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	4330000	usd
CY2023Q3	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	3614000	usd
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	12136000	usd
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	11010000	usd
CY2024Q3	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	3250000	usd
CY2023Q3	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	3063000	usd
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	13081000	usd
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	9230000	usd
CY2024Q3	us-gaap	Marketing Expense MarketingExpense	1614000	usd
CY2023Q3	us-gaap	Marketing Expense MarketingExpense	1587000	usd
	us-gaap	Marketing Expense MarketingExpense	5002000	usd
	us-gaap	Marketing Expense MarketingExpense	4777000	usd
CY2024Q3	caty	Foreclosed Real Estate Expense Income ForeclosedRealEstateExpenseIncome	596000	usd
CY2023Q3	caty	Foreclosed Real Estate Expense Income ForeclosedRealEstateExpenseIncome	435000	usd
	caty	Foreclosed Real Estate Expense Income ForeclosedRealEstateExpenseIncome	2331000	usd
	caty	Foreclosed Real Estate Expense Income ForeclosedRealEstateExpenseIncome	566000	usd
CY2024Q3	caty	Operations Of Affordable Housing Investments Net And Alternative Energy Partnerships Net OperationsOfAffordableHousingInvestmentsNetAndAlternativeEnergyPartnershipsNet	24077000	usd
CY2023Q3	caty	Operations Of Affordable Housing Investments Net And Alternative Energy Partnerships Net OperationsOfAffordableHousingInvestmentsNetAndAlternativeEnergyPartnershipsNet	23157000	usd
	caty	Operations Of Affordable Housing Investments Net And Alternative Energy Partnerships Net OperationsOfAffordableHousingInvestmentsNetAndAlternativeEnergyPartnershipsNet	61905000	usd
	caty	Operations Of Affordable Housing Investments Net And Alternative Energy Partnerships Net OperationsOfAffordableHousingInvestmentsNetAndAlternativeEnergyPartnershipsNet	60497000	usd
CY2024Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	250000	usd
CY2023Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	250000	usd
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	848000	usd
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1059000	usd
CY2024Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	4179000	usd
CY2023Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	4949000	usd
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	14311000	usd
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	14799000	usd
CY2024Q3	us-gaap	Noninterest Expense NoninterestExpense	96867000	usd
CY2023Q3	us-gaap	Noninterest Expense NoninterestExpense	93973000	usd
	us-gaap	Noninterest Expense NoninterestExpense	289458000	usd
	us-gaap	Noninterest Expense NoninterestExpense	269980000	usd
CY2024Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	78153000	usd
CY2023Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	92504000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	230776000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	310564000	usd
CY2024Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	10639000	usd
CY2023Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	10133000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	24998000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	38966000	usd
CY2024Q3	us-gaap	Net Income Loss NetIncomeLoss	67514000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	82371000	usd
	us-gaap	Net Income Loss NetIncomeLoss	205778000	usd
	us-gaap	Net Income Loss NetIncomeLoss	271598000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	26607000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-24043000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	19737000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-19915000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	0	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-441000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-774000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	-1323000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	26607000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-24484000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	18963000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-21238000	usd
CY2024Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	94121000	usd
CY2023Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	57887000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	224741000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	250360000	usd
CY2024Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.94
CY2023Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.14
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.84
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.74
CY2024Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.94
CY2023Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.13
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.83
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.73
CY2024Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.34
CY2023Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.34
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.02
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.02
CY2024Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	71786624
CY2023Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	72568518
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	72370995
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	72546149
CY2024Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	72032456
CY2023Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	72890414
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	72607550
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	72847907
CY2024Q2	us-gaap	Stockholders Equity StockholdersEquity	2793242000	usd
CY2024Q3	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	729000	usd
CY2024Q3	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	-1000	usd
CY2024Q3	caty	Stock Issued During Period Value Issued For Services Net StockIssuedDuringPeriodValueIssuedForServicesNet	-1000	usd
CY2024Q3	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	13000	usd
CY2024Q3	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	19373593000	usd
CY2023Q4	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	19548140000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	163733000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	154562000	usd
CY2024Q3	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	-10505000	usd
CY2023Q4	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	-10720000	usd
CY2024Q3	us-gaap	Notes Receivable Net NotesReceivableNet	19199355000	usd
CY2023Q4	us-gaap	Notes Receivable Net NotesReceivableNet	19382858000	usd
CY2024Q3	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	5190000	usd
CY2023Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	0	usd
CY2024Q3	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	162800000	usd
CY2023Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	66700000	usd
CY2024Q3	caty	Percentage Of Charge Off To Contractual Balances For Impaired Loans PercentageOfChargeOffToContractualBalancesForImpairedLoans	0.10	pure
CY2023Q4	caty	Percentage Of Charge Off To Contractual Balances For Impaired Loans PercentageOfChargeOffToContractualBalancesForImpairedLoans	0.158	pure
CY2023Q4	caty	Financing Receivable Nonaccrual With Allowance FinancingReceivableNonaccrualWithAllowance	0	usd
CY2024Q3	caty	Financing Receivable Nonaccrual No Allowance Unpaid Principal Balance FinancingReceivableNonaccrualNoAllowanceUnpaidPrincipalBalance	162847000	usd
CY2024Q3	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	135151000	usd
CY2024Q3	caty	Financing Receivable Nonaccrual With Allowance Unpaid Principal Balance FinancingReceivableNonaccrualWithAllowanceUnpaidPrincipalBalance	27683000	usd
CY2024Q3	caty	Financing Receivable Nonaccrual With Allowance FinancingReceivableNonaccrualWithAllowance	27683000	usd
CY2024Q3	caty	Financing Receivable Nonaccrual Allowance FinancingReceivableNonaccrualAllowance	5897000	usd
CY2024Q3	caty	Financing Receivable Nonaccrual Unpaid Principal Balance FinancingReceivableNonaccrualUnpaidPrincipalBalance	190530000	usd
CY2024Q3	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	162834000	usd
CY2024Q3	caty	Financing Receivable Nonaccrual Allowance FinancingReceivableNonaccrualAllowance	5897000	usd
CY2024Q3	caty	Treasury Stock Value Acquired Reversed Cost Method TreasuryStockValueAcquiredReversedCostMethod	35309000	usd
CY2024Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1876000	usd
CY2024Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	24331000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	26607000	usd
CY2024Q3	us-gaap	Net Income Loss NetIncomeLoss	67514000	usd
CY2024Q3	us-gaap	Stockholders Equity StockholdersEquity	2830313000	usd
CY2023Q2	us-gaap	Stockholders Equity StockholdersEquity	2602671000	usd
CY2023Q3	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	865000	usd
CY2023Q3	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	0	usd
CY2023Q3	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	0	usd
CY2023Q3	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	11000	usd
CY2023Q3	caty	Treasury Stock Value Acquired During Period Cost Method TreasuryStockValueAcquiredDuringPeriodCostMethod	9000	usd
CY2023Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1987000	usd
CY2023Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	24672000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-24484000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	82371000	usd
CY2023Q3	us-gaap	Stockholders Equity StockholdersEquity	2638736000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	2736575000	usd
	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	2217000	usd
	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	1000	usd
	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	850000	usd
	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	3722000	usd
	caty	Treasury Stock Value Acquired Reversed Cost Method TreasuryStockValueAcquiredReversedCostMethod	60610000	usd
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4065000	usd
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	73804000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	18963000	usd
	us-gaap	Net Income Loss NetIncomeLoss	205778000	usd
CY2024Q3	us-gaap	Stockholders Equity StockholdersEquity	2830313000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	2474040000	usd
	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	2699000	usd
	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	1000	usd
	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	850000	usd
	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	3538000	usd
	caty	Treasury Stock Value Acquired Reversed Cost Method TreasuryStockValueAcquiredReversedCostMethod	16683000	usd
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4945000	usd
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	73938000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-21238000	usd
	us-gaap	Net Income Loss NetIncomeLoss	271598000	usd
CY2023Q3	us-gaap	Stockholders Equity StockholdersEquity	2638736000	usd
	us-gaap	Net Income Loss NetIncomeLoss	205778000	usd
	us-gaap	Net Income Loss NetIncomeLoss	271598000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	23000000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	24255000	usd
	caty	Provision Reversal For Losses On Other Real Estate Owned ProvisionReversalForLossesOnOtherRealEstateOwned	1164000	usd
	caty	Provision Reversal For Losses On Other Real Estate Owned ProvisionReversalForLossesOnOtherRealEstateOwned	0	usd
	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	20452000	usd
	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	12079000	usd
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	5465000	usd
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	6402000	usd
	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	7309000	usd
	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	7258000	usd
	us-gaap	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	-1891000	usd
	us-gaap	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	444000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	58000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	-0	usd
	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-0	usd
	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-6000	usd
	caty	Accretion Amortization Of Investments AccretionAmortizationOfInvestments	61905000	usd
	caty	Accretion Amortization Of Investments AccretionAmortizationOfInvestments	60497000	usd
	us-gaap	Debt And Equity Securities Realized Gain Loss DebtAndEquitySecuritiesRealizedGainLoss	1107000	usd
	us-gaap	Debt And Equity Securities Realized Gain Loss DebtAndEquitySecuritiesRealizedGainLoss	14000	usd
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	19182000	usd
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	5729000	usd
	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-6204000	usd
	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	9298000	usd
	caty	Write Off Of Debt Securities WriteOffOfDebtSecurities	-0	usd
	caty	Write Off Of Debt Securities WriteOffOfDebtSecurities	-3000000	usd
	us-gaap	Employee Benefits And Share Based Compensation Noncash EmployeeBenefitsAndShareBasedCompensationNoncash	4916000	usd
	us-gaap	Employee Benefits And Share Based Compensation Noncash EmployeeBenefitsAndShareBasedCompensationNoncash	5795000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-9666000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	61019000	usd
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-40382000	usd
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	27813000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	242335000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	318929000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	988498000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	472303000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	1097594000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	412268000	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	33690000	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	0	usd
	us-gaap	Payments To Acquire Federal Home Loan Bank Stock PaymentsToAcquireFederalHomeLoanBankStock	12535000	usd
	us-gaap	Payments To Acquire Federal Home Loan Bank Stock PaymentsToAcquireFederalHomeLoanBankStock	21550000	usd
	us-gaap	Proceeds From Sale Of Federal Home Loan Bank Stock ProceedsFromSaleOfFederalHomeLoanBankStock	13031000	usd
	us-gaap	Proceeds From Sale Of Federal Home Loan Bank Stock ProceedsFromSaleOfFederalHomeLoanBankStock	21550000	usd
	us-gaap	Proceeds From Sale Of Loans Receivable ProceedsFromSaleOfLoansReceivable	130010000	usd
	us-gaap	Proceeds From Sale Of Loans Receivable ProceedsFromSaleOfLoansReceivable	0	usd
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	-26036000	usd
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	789465000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	2654000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1633000	usd
	caty	Net Increase In Investment In Affordable Housing Investing And Alternative Energy Partnerships NetIncreaseInInvestmentInAffordableHousingInvestingAndAlternativeEnergyPartnerships	31737000	usd
	caty	Net Increase In Investment In Affordable Housing Investing And Alternative Energy Partnerships NetIncreaseInInvestmentInAffordableHousingInvestingAndAlternativeEnergyPartnerships	36076000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	264937000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-887209000	usd
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	618611000	usd
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	1130271000	usd
	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	6968000000	usd
	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	10110000000	usd
	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	7448000000	usd
	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	10580000000	usd
	us-gaap	Payments Of Dividends PaymentsOfDividends	73804000	usd
	us-gaap	Payments Of Dividends PaymentsOfDividends	73938000	usd
	caty	Payments For Proceeds From Repurchase Of Common Stock PaymentsForProceedsFromRepurchaseOfCommonStock	60610000	usd
	caty	Payments For Proceeds From Repurchase Of Common Stock PaymentsForProceedsFromRepurchaseOfCommonStock	16683000	usd
	us-gaap	Proceeds From Issuance Of Common Stock Dividend Reinvestment Plan ProceedsFromIssuanceOfCommonStockDividendReinvestmentPlan	2217000	usd
	us-gaap	Proceeds From Issuance Of Common Stock Dividend Reinvestment Plan ProceedsFromIssuanceOfCommonStockDividendReinvestmentPlan	2700000	usd
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	3722000	usd
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	3538000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	2692000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	568812000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	509964000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	532000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	828801000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	1162402000	usd
CY2024Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	1338765000	usd
CY2023Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	1162934000	usd
	us-gaap	Interest Paid Net InterestPaidNet	494181000	usd
	us-gaap	Interest Paid Net InterestPaidNet	336722000	usd
	us-gaap	Income Taxes Paid IncomeTaxesPaid	41027000	usd
	us-gaap	Income Taxes Paid IncomeTaxesPaid	60332000	usd
	caty	Net Change In Unrealized Holding Loss Gain On Securities Available For Sale Net Of Tax NetChangeInUnrealizedHoldingLossGainOnSecuritiesAvailableForSaleNetOfTax	19737000	usd
	caty	Net Change In Unrealized Holding Loss Gain On Securities Available For Sale Net Of Tax NetChangeInUnrealizedHoldingLossGainOnSecuritiesAvailableForSaleNetOfTax	-19915000	usd
	us-gaap	Change In Unrealized Gain Loss On Fair Value Hedging Instruments1 ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1	-774000	usd
	us-gaap	Change In Unrealized Gain Loss On Fair Value Hedging Instruments1 ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1	-1323000	usd
	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	135141000	usd
	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	0	usd
	caty	Transfers To Other Real Estate Owned From Loans Held For Investment TransfersToOtherRealEstateOwnedFromLoansHeldForInvestment	0	usd
	caty	Transfers To Other Real Estate Owned From Loans Held For Investment TransfersToOtherRealEstateOwnedFromLoansHeldForInvestment	6264000	usd
	us-gaap	Nature Of Operations NatureOfOperations	<p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;margin:0pt;"><b><i><span style="text-decoration: underline; "><em style="font: inherit;">1.</em> Business</span></i></b></p> <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"> </p> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:justify;margin:0pt;">Cathay General Bancorp (“Bancorp”) is the holding company for Cathay Bank (the “Bank” and, together, with Bancorp, the “Company”), and <span style="-sec-ix-hidden:c119846503">eleven</span> limited partnerships investing in affordable housing investments in which the Bank is the sole limited partner. Bancorp also owns 100% of the common stock of <em style="font: inherit;">five</em> statutory business trusts created for the purpose of issuing capital securities. The Bank was founded in <em style="font: inherit;">1962</em> and offers a wide range of financial services. As of <em style="font: inherit;"> September 30, 2024</em>, the Bank operates 24 branches in Southern California, 19 branches in Northern California, 9 branches in New York State, four in Washington State, two in Illinois, two in Texas, one in Maryland, Massachusetts, Nevada, and New Jersey, one in Hong Kong, and a representative office in Taipei, Beijing, and Shanghai. Deposit accounts at the Hong Kong branch are <em style="font: inherit;">not</em> insured by the Federal Deposit Insurance Corporation (the “FDIC”).</p> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:justify;margin:0pt;"> </p> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:justify;margin:0pt;"> </p>
CY2024Q3	caty	Percentage Of Subsidiaries Common Securities Owned By Parent Company PercentageOfSubsidiariesCommonSecuritiesOwnedByParentCompany	1	pure
CY2023Q4	caty	Financing Receivable Nonaccrual No Allowance Unpaid Principal Balance FinancingReceivableNonaccrualNoAllowanceUnpaidPrincipalBalance	88728000	usd
CY2023Q4	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	66681000	usd
CY2023Q4	caty	Financing Receivable Nonaccrual Unpaid Principal Balance FinancingReceivableNonaccrualUnpaidPrincipalBalance	88728000	usd
CY2023Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	66681000	usd
CY2023Q4	caty	Financing Receivable Nonaccrual Allowance FinancingReceivableNonaccrualAllowance	0	usd
CY2024Q3	caty	Financing Receivable Nonaccrual Average Recorded Investment FinancingReceivableNonaccrualAverageRecordedInvestment	140619000	usd
CY2024Q3	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	102000	usd
	caty	Financing Receivable Nonaccrual Average Recorded Investment FinancingReceivableNonaccrualAverageRecordedInvestment	115769000	usd
	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	229000	usd
CY2023Q3	caty	Financing Receivable Nonaccrual Average Recorded Investment FinancingReceivableNonaccrualAverageRecordedInvestment	74673000	usd
CY2023Q3	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	79000	usd
	caty	Financing Receivable Nonaccrual Average Recorded Investment FinancingReceivableNonaccrualAverageRecordedInvestment	71878000	usd
	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	254000	usd
CY2024Q3	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	19373593000	usd
CY2023Q4	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	19548140000	usd
CY2024Q3	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	135000	usd
	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	8079000	usd
CY2023Q3	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	2653000	usd
	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	2688000	usd
	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	0	usd
	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	0	usd
CY2024Q3	us-gaap	Financing Receivable Troubled Debt Restructuring Increase Decrease From Modification FinancingReceivableTroubledDebtRestructuringIncreaseDecreaseFromModification	135000	usd
	us-gaap	Financing Receivable Troubled Debt Restructuring Increase Decrease From Modification FinancingReceivableTroubledDebtRestructuringIncreaseDecreaseFromModification	8079000	usd
CY2023Q3	us-gaap	Financing Receivable Troubled Debt Restructuring Increase Decrease From Modification FinancingReceivableTroubledDebtRestructuringIncreaseDecreaseFromModification	2653000	usd
	us-gaap	Financing Receivable Troubled Debt Restructuring Increase Decrease From Modification FinancingReceivableTroubledDebtRestructuringIncreaseDecreaseFromModification	2688000	usd
CY2024Q3	us-gaap	Loans And Leases Receivable Impaired Commitment To Lend LoansAndLeasesReceivableImpairedCommitmentToLend	0	usd
CY2024Q3	us-gaap	Financing Receivable Originated In Current Fiscal Year FinancingReceivableOriginatedInCurrentFiscalYear	1853534000	usd
CY2024Q3	us-gaap	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear	3549504000	usd
CY2024Q3	us-gaap	Financing Receivable Originated Two Years Before Latest Fiscal Year FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear	3240852000	usd
CY2024Q3	us-gaap	Financing Receivable Originated Three Years Before Latest Fiscal Year FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear	2724382000	usd
CY2024Q3	us-gaap	Financing Receivable Originated Four Years Before Latest Fiscal Year FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear	1414484000	usd
CY2024Q3	us-gaap	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear	4387080000	usd
CY2024Q3	us-gaap	Financing Receivable Revolving FinancingReceivableRevolving	2167831000	usd
CY2024Q3	us-gaap	Financing Receivable Revolving Converted To Term Loan FinancingReceivableRevolvingConvertedToTermLoan	25421000	usd
CY2024Q3	us-gaap	Notes Receivable Gross NotesReceivableGross	19363088000	usd
	us-gaap	Financing Receivable Year One Originated Current Fiscal Year Writeoff FinancingReceivableYearOneOriginatedCurrentFiscalYearWriteoff	98000	usd
	us-gaap	Financing Receivable Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff FinancingReceivableYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff	672000	usd
	us-gaap	Financing Receivable Year Three Originated Two Years Before Current Fiscal Year Writeoff FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff	575000	usd
	us-gaap	Financing Receivable Year Four Originated Three Years Before Current Fiscal Year Writeoff FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff	8283000	usd
	us-gaap	Financing Receivable Year Five Originated Four Years Before Current Fiscal Year Writeoff FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff	257000	usd
	us-gaap	Financing Receivable Originated More Than Five Years Before Current Fiscal Year Writeoff FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff	2046000	usd
	us-gaap	Financing Receivable Revolving Writeoff FinancingReceivableRevolvingWriteoff	2994000	usd
	us-gaap	Financing Receivable Revolving Converted To Term Loan Writeoff FinancingReceivableRevolvingConvertedToTermLoanWriteoff	3000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	14928000	usd
CY2023Q4	us-gaap	Financing Receivable Originated In Current Fiscal Year FinancingReceivableOriginatedInCurrentFiscalYear	3724618000	usd
CY2023Q4	us-gaap	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear	3581730000	usd
CY2023Q4	us-gaap	Financing Receivable Originated Two Years Before Latest Fiscal Year FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear	3052314000	usd
CY2023Q4	us-gaap	Financing Receivable Originated Three Years Before Latest Fiscal Year FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear	1588314000	usd
CY2023Q4	us-gaap	Financing Receivable Originated Four Years Before Latest Fiscal Year FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear	1686965000	usd
CY2023Q4	us-gaap	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear	3571544000	usd
CY2023Q4	us-gaap	Financing Receivable Revolving FinancingReceivableRevolving	2306710000	usd
CY2023Q4	us-gaap	Financing Receivable Revolving Converted To Term Loan FinancingReceivableRevolvingConvertedToTermLoan	25225000	usd
CY2023Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	19537420000	usd
CY2023	us-gaap	Financing Receivable Year One Originated Current Fiscal Year Writeoff FinancingReceivableYearOneOriginatedCurrentFiscalYearWriteoff	0	usd
CY2023	us-gaap	Financing Receivable Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff FinancingReceivableYearTwoOriginatedFiscalYearBeforeCurrentFiscalYearWriteoff	992000	usd
CY2023	us-gaap	Financing Receivable Year Three Originated Two Years Before Current Fiscal Year Writeoff FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearWriteoff	1520000	usd
CY2023	us-gaap	Financing Receivable Year Four Originated Three Years Before Current Fiscal Year Writeoff FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearWriteoff	384000	usd
CY2023	us-gaap	Financing Receivable Year Five Originated Four Years Before Current Fiscal Year Writeoff FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearWriteoff	4641000	usd
CY2023	us-gaap	Financing Receivable Originated More Than Five Years Before Current Fiscal Year Writeoff FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearWriteoff	14429000	usd
CY2023	us-gaap	Financing Receivable Revolving Writeoff FinancingReceivableRevolvingWriteoff	1520000	usd
CY2023	us-gaap	Financing Receivable Revolving Converted To Term Loan Writeoff FinancingReceivableRevolvingConvertedToTermLoanWriteoff	0	usd
CY2023	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	23486000	usd
CY2024Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	153403000	usd
CY2024Q3	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	14532000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	4478000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	276000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Loss Writeoff After Recovery FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery	4202000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	163733000	usd
CY2023Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	155109000	usd
CY2023Q3	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	6121000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	7483000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	872000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Loss Writeoff After Recovery FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery	6611000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	154619000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	154562000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	22511000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	14928000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	1588000	usd
	us-gaap	Financing Receivable Allowance For Credit Loss Writeoff After Recovery FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery	13340000	usd
CY2024Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	163733000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	146485000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	21581000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	17873000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	4426000	usd
	us-gaap	Financing Receivable Allowance For Credit Loss Writeoff After Recovery FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery	13447000	usd
CY2023Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	154619000	usd
CY2023Q4	us-gaap	Loans Receivable Held For Sale Net Not Part Of Disposal Group LoansReceivableHeldForSaleNetNotPartOfDisposalGroup	0	usd
	caty	Gain Loss On Sale Of Loans Net GainLossOnSaleOfLoansNet	58100	usd
	caty	Loans Fair Value Adjustment LoansFairValueAdjustment	0	usd
CY2023Q3	us-gaap	Financing Receivable Reclassification To Held For Sale FinancingReceivableReclassificationToHeldForSale	0	usd
CY2024Q3	caty	Commitments To Fund Fixed Rate Loans CommitmentsToFundFixedRateLoans	89100000	usd
CY2023Q4	caty	Commitments To Fund Fixed Rate Loans CommitmentsToFundFixedRateLoans	106500000	usd
CY2024Q3	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Amount Of Available Unused Funds FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresAmountOfAvailableUnusedFunds	7290000000	usd
CY2023Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Amount Of Available Unused Funds FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresAmountOfAvailableUnusedFunds	6600000000	usd
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.108	pure
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.126	pure
CY2024Q3	us-gaap	Asset Impairment Charges AssetImpairmentCharges	3728000	usd
CY2023Q3	us-gaap	Asset Impairment Charges AssetImpairmentCharges	252000	usd
	us-gaap	Asset Impairment Charges AssetImpairmentCharges	5017000	usd
	us-gaap	Asset Impairment Charges AssetImpairmentCharges	4069000	usd
CY2023	us-gaap	Asset Impairment Charges AssetImpairmentCharges	4296000	usd
CY2022	us-gaap	Asset Impairment Charges AssetImpairmentCharges	4145000	usd
CY2024Q3	caty	Notional Amount Of Foreign Currency Derivative Purchase Contracts With Gain NotionalAmountOfForeignCurrencyDerivativePurchaseContractsWithGain	68329000	usd
CY2024Q3	caty	Foreign Exchange Contract Asset Fair Value Gain Disclosure ForeignExchangeContractAssetFairValueGainDisclosure	535000	usd
CY2023Q4	caty	Notional Amount Of Foreign Currency Derivative Purchase Contracts With Gain NotionalAmountOfForeignCurrencyDerivativePurchaseContractsWithGain	124452000	usd
CY2023Q4	caty	Foreign Exchange Contract Asset Fair Value Gain Disclosure ForeignExchangeContractAssetFairValueGainDisclosure	379000	usd
CY2024Q3	us-gaap	Derivative Asset Notional Amount DerivativeAssetNotionalAmount	983562000	usd
CY2024Q3	us-gaap	Interest Rate Derivative Assets At Fair Value InterestRateDerivativeAssetsAtFairValue	32807000	usd
CY2023Q4	us-gaap	Derivative Asset Notional Amount DerivativeAssetNotionalAmount	1406879000	usd
CY2023Q4	us-gaap	Interest Rate Derivative Assets At Fair Value InterestRateDerivativeAssetsAtFairValue	54268000	usd
CY2024Q3	caty	Notional Amount Of Foreign Currency Derivative Purchase Contracts With Loss NotionalAmountOfForeignCurrencyDerivativePurchaseContractsWithLoss	211941000	usd
CY2024Q3	caty	Foreign Currency Contract Asset Fair Value Loss Disclosure ForeignCurrencyContractAssetFairValueLossDisclosure	693000	usd
CY2023Q4	caty	Notional Amount Of Foreign Currency Derivative Purchase Contracts With Loss NotionalAmountOfForeignCurrencyDerivativePurchaseContractsWithLoss	101378000	usd
CY2023Q4	caty	Foreign Currency Contract Asset Fair Value Loss Disclosure ForeignCurrencyContractAssetFairValueLossDisclosure	175000	usd
CY2024Q3	us-gaap	Derivative Liability Notional Amount DerivativeLiabilityNotionalAmount	1195424000	usd
CY2024Q3	us-gaap	Interest Rate Derivative Liabilities At Fair Value InterestRateDerivativeLiabilitiesAtFairValue	38001000	usd
CY2023Q4	us-gaap	Derivative Liability Notional Amount DerivativeLiabilityNotionalAmount	1078880000	usd
CY2023Q4	us-gaap	Interest Rate Derivative Liabilities At Fair Value InterestRateDerivativeLiabilitiesAtFairValue	45762000	usd
CY2024Q3	caty	Commitments To Extend Notional Amount CommitmentsToExtendNotionalAmount	3686392000	usd
CY2024Q3	caty	Commitments To Extend Credit Fair Value CommitmentsToExtendCreditFairValue	-18171000	usd
CY2023Q4	caty	Commitments To Extend Notional Amount CommitmentsToExtendNotionalAmount	3808620000	usd
CY2023Q4	caty	Commitments To Extend Credit Fair Value CommitmentsToExtendCreditFairValue	-14344000	usd
CY2024Q3	caty	Standby Letters Of Credit Notional Amount StandbyLettersOfCreditNotionalAmount	422763000	usd
CY2024Q3	caty	Standby Letters Of Credit Fair Value StandbyLettersOfCreditFairValue	-3146000	usd
CY2023Q4	caty	Standby Letters Of Credit Notional Amount StandbyLettersOfCreditNotionalAmount	368618000	usd
CY2023Q4	caty	Standby Letters Of Credit Fair Value StandbyLettersOfCreditFairValue	-2821000	usd
CY2024Q3	caty	Other Letters Of Credit Notional Amount OtherLettersOfCreditNotionalAmount	10858000	usd
CY2024Q3	caty	Other Letters Of Credit Fair Value OtherLettersOfCreditFairValue	-12000	usd
CY2023Q4	caty	Other Letters Of Credit Notional Amount OtherLettersOfCreditNotionalAmount	11308000	usd
CY2023Q4	caty	Other Letters Of Credit Fair Value OtherLettersOfCreditFairValue	-10000	usd
CY2024Q3	us-gaap	Goodwill Goodwill	375700000	usd
CY2024Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear	250000	usd
CY2024Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	946000	usd
CY2024Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	870000	usd
CY2024Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	870000	usd
CY2024Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	260000	usd
CY2024Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	3196000	usd
CY2014Q2	us-gaap	Junior Subordinated Notes JuniorSubordinatedNotes	119100000	usd
CY2024Q3	us-gaap	Derivative Assets DerivativeAssets	32807000	usd
CY2024Q3	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	1848000	usd
CY2024Q3	caty	Net Amount Of Derivative Assets Presented In The Balance Sheet NetAmountOfDerivativeAssetsPresentedInTheBalanceSheet	30959000	usd
CY2024Q3	us-gaap	Derivative Asset Fair Value Of Collateral DerivativeAssetFairValueOfCollateral	24020000	usd
CY2024Q3	caty	Net Amount Of Derivative Assets Presented In The Balance Sheet Not Offset NetAmountOfDerivativeAssetsPresentedInTheBalanceSheetNotOffset	6939000	usd
CY2024Q3	us-gaap	Derivative Liabilities DerivativeLiabilities	38001000	usd
CY2024Q3	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	-0	usd
CY2024Q3	caty	Net Amount Of Derivative Liabilities Presented In The Balance Sheet NetAmountOfDerivativeLiabilitiesPresentedInTheBalanceSheet	38001000	usd
CY2024Q3	us-gaap	Derivative Liability Fair Value Of Collateral DerivativeLiabilityFairValueOfCollateral	-0	usd
CY2024Q3	caty	Net Amount Of Derivative Liabilities Presented In The Balance Sheet Not Offset NetAmountOfDerivativeLiabilitiesPresentedInTheBalanceSheetNotOffset	38001000	usd
CY2023Q4	us-gaap	Derivative Assets DerivativeAssets	54268000	usd
CY2023Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	335000	usd
CY2023Q4	caty	Net Amount Of Derivative Assets Presented In The Balance Sheet NetAmountOfDerivativeAssetsPresentedInTheBalanceSheet	53933000	usd
CY2023Q4	us-gaap	Derivative Asset Fair Value Of Collateral DerivativeAssetFairValueOfCollateral	44860000	usd
CY2023Q4	caty	Net Amount Of Derivative Assets Presented In The Balance Sheet Not Offset NetAmountOfDerivativeAssetsPresentedInTheBalanceSheetNotOffset	9073000	usd
CY2023Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	45762000	usd
CY2023Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	-0	usd
CY2023Q4	caty	Net Amount Of Derivative Liabilities Presented In The Balance Sheet NetAmountOfDerivativeLiabilitiesPresentedInTheBalanceSheet	45762000	usd
CY2023Q4	us-gaap	Derivative Liability Fair Value Of Collateral DerivativeLiabilityFairValueOfCollateral	-0	usd
CY2023Q4	caty	Net Amount Of Derivative Liabilities Presented In The Balance Sheet Not Offset NetAmountOfDerivativeLiabilitiesPresentedInTheBalanceSheetNotOffset	45762000	usd
CY2024Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	13829000	usd
CY2023Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	11792000	usd
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	38620000	usd
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	32318000	usd
CY2024Q3	caty	Noninteres Income Not Inscope NoninteresIncomeNotInscope	6536000	usd
CY2023Q3	caty	Noninteres Income Not Inscope NoninteresIncomeNotInscope	-3955000	usd
	caty	Noninteres Income Not Inscope NoninteresIncomeNotInscope	1571000	usd
	caty	Noninteres Income Not Inscope NoninteresIncomeNotInscope	12873000	usd
CY2024Q3	us-gaap	Noninterest Income NoninterestIncome	20365000	usd
CY2023Q3	us-gaap	Noninterest Income NoninterestIncome	7837000	usd
	us-gaap	Noninterest Income NoninterestIncome	40191000	usd
	us-gaap	Noninterest Income NoninterestIncome	45191000	usd
CY2024Q3	us-gaap	Stockholders Equity StockholdersEquity	2830000000	usd
	us-gaap	Stockholders Equity Period Increase Decrease StockholdersEquityPeriodIncreaseDecrease	93700000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	2740000000	usd
	us-gaap	Net Income Loss NetIncomeLoss	205800000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	19000000	usd
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	4100000	usd
	us-gaap	Proceeds From Issuance Of Common Stock Dividend Reinvestment Plan ProceedsFromIssuanceOfCommonStockDividendReinvestmentPlan	2200000	usd
	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	850000	usd
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	73800000	usd
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	60600000	usd

Files In Submission

Name	View Source	Status
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0001437749-24-034150.txt	Edgar Link	pending
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$CATY
CATHAY GENERAL BANCORP Stock $caty

2024 Q4 Form 10-Q Financial Statement

#000143774924034150 Filed on November 08, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CATY CATHAY GENERAL BANCORP Stock $caty

2024 Q4 Form 10-Q Financial Statement

#000143774924034150 Filed on November 08, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CATY
CATHAY GENERAL BANCORP Stock $caty