$CATY
CATHAY GENERAL BANCORP Stock $caty

$caty Overview Financials Valuation SEC Filings Company Website

2022 Q4 Form 10-Q Financial Statement

#000143774922026389 Filed on November 08, 2022

Income Statement

Concept	2022 Q4	2022 Q3
Revenue		$11.03M
YoY Change		-93.46%
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	$3.111M	$2.272M
YoY Change	48.14%	33.65%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense		$28.49M
YoY Change		76.45%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$131.3M	$130.0M
YoY Change	33.14%	45.38%
Income Tax	$33.68M	$30.98M
% Of Pretax Income	25.65%	23.83%
Net Earnings	$97.60M	$99.04M
YoY Change	29.62%	36.79%
Net Earnings / Revenue		897.63%
Basic Earnings Per Share		$1.35
Diluted Earnings Per Share	$1.328M	$1.348M
COMMON SHARES
Basic Shares Outstanding	74.41M	74.47M
Diluted Shares Outstanding		73.44M

Balance Sheet

Concept	2022 Q4	2022 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$1.162B	$1.263B
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	$124.4M	$127.1M
YoY Change	25.15%	26.66%
Goodwill	$375.7M	$375.7M
YoY Change	0.94%	0.94%
Intangibles	$5.757M	$6.948M
YoY Change	24.42%	43.82%
Long-Term Investments
YoY Change
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$21.99B	$21.89B
YoY Change	5.26%	10.22%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$32.52M	$33.93M
YoY Change	4.9%	6.03%
Deferred Revenue
YoY Change
Short-Term Debt
YoY Change
Long-Term Debt Due	$0.00	$0.00
YoY Change
Total Short-Term Liabilities	$32.52M	$33.93M
YoY Change	4.9%	6.03%
LONG-TERM LIABILITIES
Long-Term Debt	$141.7M	$141.8M
YoY Change	-0.19%	-0.15%
Other Long-Term Liabilities	$344.8M	$352.2M
YoY Change	90.5%	92.46%
Total Long-Term Liabilities	$486.5M	$494.0M
YoY Change	50.63%	52.0%
TOTAL LIABILITIES
Total Short-Term Liabilities	$32.52M	$33.93M
Total Long-Term Liabilities	$486.5M	$494.0M
Total Liabilities	$19.51B	$19.47B
YoY Change	5.81%	11.92%
SHAREHOLDERS EQUITY
Retained Earnings	$2.245B	$2.172B
YoY Change	13.08%	12.2%
Common Stock	$911.0K	$911.0K
YoY Change	0.22%	0.22%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$650.6M	$619.0M
YoY Change	27.75%	39.79%
Treasury Stock Shares	$18.35M	$17.66M
Shareholders Equity	$2.474B	$2.420B
YoY Change
Total Liabilities & Shareholders Equity	$21.99B	$21.89B
YoY Change	5.26%	10.22%

Cashflow Statement

Concept	2022 Q4	2022 Q3
OPERATING ACTIVITIES
Net Income	$97.60M	$99.04M
YoY Change	29.62%	36.79%
Depreciation, Depletion And Amortization	$3.111M	$2.272M
YoY Change	48.14%	33.65%
Cash From Operating Activities	$97.42M	$190.9M
YoY Change	0.64%	168.45%
INVESTING ACTIVITIES
Capital Expenditures	$297.0K	-$864.0K
YoY Change	-133.0%	-13.6%
Acquisitions
YoY Change
Other Investing Activities	-$197.1M	-$562.7M
YoY Change	-54.26%	49.05%
Cash From Investing Activities	-$197.4M	-$563.5M
YoY Change	-54.28%	48.85%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-987.0K	482.1M
YoY Change	-100.1%	17.86%
NET CHANGE
Cash From Operating Activities	97.42M	190.9M
Cash From Investing Activities	-197.4M	-563.5M
Cash From Financing Activities	-987.0K	482.1M
Net Change In Cash	-100.9M	109.4M
YoY Change	-116.14%	7.77%
FREE CASH FLOW
Cash From Operating Activities	$97.42M	$190.9M
Capital Expenditures	$297.0K	-$864.0K
Free Cash Flow	$97.12M	$191.7M
YoY Change	-0.59%	165.93%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2022Q3	caty	Other Borrowings For Affordable Housing Investments OtherBorrowingsForAffordableHousingInvestments	22651000	usd
CY2021Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1126867000	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	2022
CY2022Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2021Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2022Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000
CY2022Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	30679000	usd
CY2022Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1577311000	usd
CY2021Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000
CY2022Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	91067423
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	27834000	usd
CY2022Q3	us-gaap	Other Assets OtherAssets	303628000	usd
CY2021Q4	us-gaap	Other Assets OtherAssets	195403000	usd
CY2022Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	73411960
CY2021Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	90871860
CY2021Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	75750862
CY2022Q3	us-gaap	Treasury Stock Shares TreasuryStockShares	17655463
CY2021Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	15120998
	us-gaap	Debt Securities Held To Maturity Transfer To Available For Sale Allowance For Credit Loss Expense DebtSecuritiesHeldToMaturityTransferToAvailableForSaleAllowanceForCreditLossExpense	0	usd
CY2022Q3	us-gaap	Assets Assets	21890131000	usd
	us-gaap	Debt Securities Held To Maturity Transfer To Available For Sale Allowance For Credit Loss Expense DebtSecuritiesHeldToMaturityTransferToAvailableForSaleAllowanceForCreditLossExpense	0	usd
	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	0	usd
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2022-09-30
	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
CY2022Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	74413792
CY2022Q3	us-gaap	Cash And Due From Banks CashAndDueFromBanks	200051000	usd
CY2021Q4	us-gaap	Cash And Due From Banks CashAndDueFromBanks	134141000	usd
CY2022Q3	caty	Short Term Investments And Interest Bearing Deposits ShortTermInvestmentsAndInterestBearingDeposits	1063294000	usd
CY2021Q4	caty	Short Term Investments And Interest Bearing Deposits ShortTermInvestmentsAndInterestBearingDeposits	2315563000	usd
CY2022Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1414411000	usd
CY2021Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1127309000	usd
CY2022Q3	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	18106803000	usd
CY2021Q4	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	16342479000	usd
CY2022Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	148817000	usd
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	136157000	usd
CY2022Q3	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	-6936000	usd
CY2021Q4	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	-4321000	usd
CY2022Q3	us-gaap	Notes Receivable Net NotesReceivableNet	17951050000	usd
CY2021Q4	us-gaap	Notes Receivable Net NotesReceivableNet	16202001000	usd
CY2022Q3	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	23123000	usd
CY2021Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	22319000	usd
CY2022Q3	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	17250000	usd
CY2021Q4	us-gaap	Assets Assets	20886723000	usd
CY2022Q3	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	4398152000	usd
CY2021Q4	us-gaap	Noninterest Bearing Deposit Liabilities NoninterestBearingDepositLiabilities	4492054000	usd
CY2022Q3	us-gaap	Deposits Negotiable Order Of Withdrawal Now DepositsNegotiableOrderOfWithdrawalNOW	2570036000	usd
CY2021Q4	us-gaap	Deposits Negotiable Order Of Withdrawal Now DepositsNegotiableOrderOfWithdrawalNOW	2522442000	usd
CY2022Q3	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	4935266000	usd
CY2021Q4	us-gaap	Deposits Money Market Deposits DepositsMoneyMarketDeposits	4611579000	usd
CY2022Q3	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	1128823000	usd
CY2021Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	17250000	usd
CY2022Q3	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	4067000	usd
CY2021Q4	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	4368000	usd
CY2022Q3	caty	Affordable Housing Investments And Alternative Energy Partnerships Net AffordableHousingInvestmentsAndAlternativeEnergyPartnershipsNet	325439000	usd
CY2021Q4	caty	Affordable Housing Investments And Alternative Energy Partnerships Net AffordableHousingInvestmentsAndAlternativeEnergyPartnershipsNet	299211000	usd
CY2022Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	96419000	usd
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	99402000	usd
CY2022Q3	us-gaap	Due From Customer Acceptances DueFromCustomerAcceptances	6899000	usd
CY2021Q4	us-gaap	Due From Customer Acceptances DueFromCustomerAcceptances	8112000	usd
CY2022Q3	us-gaap	Interest Receivable InterestReceivable	71177000	usd
CY2021Q4	us-gaap	Interest Receivable InterestReceivable	56994000	usd
CY2022Q3	us-gaap	Goodwill Goodwill	375696000	usd
CY2021Q4	us-gaap	Goodwill Goodwill	372189000	usd
CY2022Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	6948000	usd
CY2021Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	4627000	usd
CY2021Q4	us-gaap	Deposits Savings Deposits DepositsSavingsDeposits	915515000	usd
CY2022Q3	us-gaap	Time Deposits TimeDeposits	5543474000	usd
CY2021Q4	us-gaap	Time Deposits TimeDeposits	5517252000	usd
CY2022Q3	us-gaap	Deposits Deposits	18575751000	usd
CY2021Q4	us-gaap	Deposits Deposits	18058842000	usd
CY2022Q3	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	360000000	usd
CY2021Q4	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	20000000	usd
CY2021Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-2740000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-109809000	usd
CY2021Q4	caty	Other Borrowings For Affordable Housing Investments OtherBorrowingsForAffordableHousingInvestments	23145000	usd
CY2022Q3	us-gaap	Long Term Debt LongTermDebt	119136000	usd
CY2021Q4	us-gaap	Long Term Debt LongTermDebt	119136000	usd
CY2022Q3	us-gaap	Bank Acceptances Executed And Outstanding BankAcceptancesExecutedAndOutstanding	6899000	usd
CY2021Q4	us-gaap	Bank Acceptances Executed And Outstanding BankAcceptancesExecutedAndOutstanding	8112000	usd
CY2022Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	33931000	usd
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	30694000	usd
CY2022Q3	us-gaap	Other Liabilities OtherLiabilities	352204000	usd
CY2021Q4	us-gaap	Other Liabilities OtherLiabilities	180543000	usd
CY2022Q3	us-gaap	Liabilities Liabilities	19470572000	usd
CY2021Q4	us-gaap	Liabilities Liabilities	18440472000	usd
CY2022Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies	0	usd
CY2021Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies	0	usd
CY2022Q3	us-gaap	Common Stock Value CommonStockValue	911000	usd
CY2021Q4	us-gaap	Common Stock Value CommonStockValue	909000	usd
CY2022Q3	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	978433000	usd
CY2021Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	972474000	usd
CY2022Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-112874000	usd
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-3065000	usd
CY2022Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	2172098000	usd
CY2021Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1985168000	usd
CY2022Q3	us-gaap	Treasury Stock Value TreasuryStockValue	619009000	usd
CY2021Q4	us-gaap	Treasury Stock Value TreasuryStockValue	509235000	usd
CY2022Q3	us-gaap	Stockholders Equity StockholdersEquity	2419559000	usd
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	2446251000	usd
CY2022Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	21890131000	usd
CY2021Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	20886723000	usd
CY2022Q3	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	211541000	usd
CY2021Q3	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	163948000	usd
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	558657000	usd
	us-gaap	Interest And Fee Income Loans And Leases InterestAndFeeIncomeLoansAndLeases	485162000	usd
CY2022Q3	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	7483000	usd
CY2021Q3	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	3707000	usd
	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	18059000	usd
	us-gaap	Interest Income Securities Taxable InterestIncomeSecuritiesTaxable	9963000	usd
CY2022Q3	caty	Dividend Income From Federal Home Loan Bank Stock DividendIncomeFromFederalHomeLoanBankStock	258000	usd
CY2021Q3	caty	Dividend Income From Federal Home Loan Bank Stock DividendIncomeFromFederalHomeLoanBankStock	258000	usd
	caty	Dividend Income From Federal Home Loan Bank Stock DividendIncomeFromFederalHomeLoanBankStock	774000	usd
	caty	Dividend Income From Federal Home Loan Bank Stock DividendIncomeFromFederalHomeLoanBankStock	730000	usd
CY2022Q3	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	6732000	usd
CY2021Q3	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	714000	usd
	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	10003000	usd
	us-gaap	Interest Income Deposits With Financial Institutions InterestIncomeDepositsWithFinancialInstitutions	1467000	usd
CY2022Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	226014000	usd
CY2021Q3	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	168627000	usd
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	587493000	usd
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	497322000	usd
CY2022Q3	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	10218000	usd
CY2021Q3	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	9299000	usd
	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	22002000	usd
	us-gaap	Interest Expense Time Deposits InterestExpenseTimeDeposits	33363000	usd
CY2022Q3	us-gaap	Interest Expense Other Domestic Deposits InterestExpenseOtherDomesticDeposits	13871000	usd
CY2021Q3	us-gaap	Interest Expense Other Domestic Deposits InterestExpenseOtherDomesticDeposits	5243000	usd
	us-gaap	Interest Expense Other Domestic Deposits InterestExpenseOtherDomesticDeposits	25894000	usd
	us-gaap	Interest Expense Other Domestic Deposits InterestExpenseOtherDomesticDeposits	16302000	usd
CY2022Q3	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Long Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm	2941000	usd
CY2021Q3	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Long Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm	146000	usd
	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Long Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm	3396000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	531883000	usd
	us-gaap	Interest Expense Federal Home Loan Bank And Federal Reserve Bank Advances Long Term InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm	1036000	usd
CY2022Q3	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	1455000	usd
CY2021Q3	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	1455000	usd
	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	4318000	usd
	us-gaap	Interest Expense Other Long Term Debt InterestExpenseOtherLongTermDebt	4318000	usd
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	442303000	usd
CY2022Q3	us-gaap	Interest Expense InterestExpense	28485000	usd
CY2022Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	197529000	usd
CY2021Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	152484000	usd
CY2021Q3	us-gaap	Interest Expense InterestExpense	16143000	usd
	us-gaap	Interest Expense InterestExpense	55610000	usd
	us-gaap	Interest Expense InterestExpense	55019000	usd
CY2022Q3	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	2000000	usd
CY2021Q3	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	3050000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	13143000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	-19508000	usd
CY2022Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	195529000	usd
CY2021Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	149434000	usd
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	518740000	usd
	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	461811000	usd
CY2022Q3	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	-3661000	usd
CY2021Q3	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	3000	usd
	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	1358000	usd
	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	-3628000	usd
CY2022Q3	us-gaap	Debt Securities Gain Loss DebtSecuritiesGainLoss	0	usd
CY2021Q3	us-gaap	Debt Securities Gain Loss DebtSecuritiesGainLoss	0	usd
	us-gaap	Debt Securities Gain Loss DebtSecuritiesGainLoss	0	usd
	us-gaap	Debt Securities Gain Loss DebtSecuritiesGainLoss	853000	usd
CY2022Q3	caty	Letter Of Credit Commissions LetterOfCreditCommissions	1609000	usd
CY2021Q3	caty	Letter Of Credit Commissions LetterOfCreditCommissions	1764000	usd
	caty	Letter Of Credit Commissions LetterOfCreditCommissions	4767000	usd
	caty	Letter Of Credit Commissions LetterOfCreditCommissions	5236000	usd
CY2022Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	6054000	usd
CY2021Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	5470000	usd
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	21114000	usd
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	17157000	usd
CY2022Q3	us-gaap	Noninterest Income NoninterestIncome	9876000	usd
CY2021Q3	us-gaap	Noninterest Income NoninterestIncome	12216000	usd
	us-gaap	Noninterest Income NoninterestIncome	44726000	usd
	us-gaap	Noninterest Income NoninterestIncome	34799000	usd
CY2022Q3	us-gaap	Salaries Wages And Officers Compensation SalariesWagesAndOfficersCompensation	34677000	usd
CY2021Q3	us-gaap	Salaries Wages And Officers Compensation SalariesWagesAndOfficersCompensation	33437000	usd
	us-gaap	Salaries Wages And Officers Compensation SalariesWagesAndOfficersCompensation	107453000	usd
	us-gaap	Salaries Wages And Officers Compensation SalariesWagesAndOfficersCompensation	98917000	usd
CY2022Q3	us-gaap	Occupancy Net OccupancyNet	5975000	usd
CY2021Q3	us-gaap	Occupancy Net OccupancyNet	5136000	usd
	us-gaap	Occupancy Net OccupancyNet	17150000	usd
	us-gaap	Occupancy Net OccupancyNet	15142000	usd
CY2022Q3	us-gaap	Equipment Expense EquipmentExpense	3509000	usd
CY2021Q3	us-gaap	Equipment Expense EquipmentExpense	3175000	usd
	us-gaap	Equipment Expense EquipmentExpense	9762000	usd
	us-gaap	Equipment Expense EquipmentExpense	10093000	usd
CY2022Q3	us-gaap	Professional Fees ProfessionalFees	6337000	usd
CY2021Q3	us-gaap	Professional Fees ProfessionalFees	6232000	usd
	us-gaap	Professional Fees ProfessionalFees	20738000	usd
	us-gaap	Professional Fees ProfessionalFees	16698000	usd
CY2022Q3	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	3484000	usd
CY2021Q3	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	3524000	usd
CY2022Q3	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	2003000	usd
CY2021Q3	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	1830000	usd
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	9813000	usd
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	10422000	usd
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	5999000	usd
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	5195000	usd
CY2022Q3	us-gaap	Marketing Expense MarketingExpense	2005000	usd
CY2021Q3	us-gaap	Marketing Expense MarketingExpense	945000	usd
	us-gaap	Marketing Expense MarketingExpense	4692000	usd
	us-gaap	Marketing Expense MarketingExpense	5270000	usd
CY2022Q3	caty	Foreclosed Real Estate Expense Income ForeclosedRealEstateExpenseIncome	55000	usd
CY2021Q3	caty	Foreclosed Real Estate Expense Income ForeclosedRealEstateExpenseIncome	-88000	usd
	caty	Foreclosed Real Estate Expense Income ForeclosedRealEstateExpenseIncome	93000	usd
	caty	Foreclosed Real Estate Expense Income ForeclosedRealEstateExpenseIncome	197000	usd
CY2022Q3	caty	Operations Of Affordable Housing Investments Net And Alternative Energy Partnerships Net OperationsOfAffordableHousingInvestmentsNetAndAlternativeEnergyPartnershipsNet	11949000	usd
CY2021Q3	caty	Operations Of Affordable Housing Investments Net And Alternative Energy Partnerships Net OperationsOfAffordableHousingInvestmentsNetAndAlternativeEnergyPartnershipsNet	12411000	usd
	caty	Operations Of Affordable Housing Investments Net And Alternative Energy Partnerships Net OperationsOfAffordableHousingInvestmentsNetAndAlternativeEnergyPartnershipsNet	27471000	usd
	caty	Operations Of Affordable Housing Investments Net And Alternative Energy Partnerships Net OperationsOfAffordableHousingInvestmentsNetAndAlternativeEnergyPartnershipsNet	34663000	usd
CY2022Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	250000	usd
CY2021Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	172000	usd
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	724000	usd
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	515000	usd
CY2022Q3	caty	Debt Redemption Cost DebtRedemptionCost	0	usd
CY2021Q3	caty	Debt Redemption Cost DebtRedemptionCost	0	usd
	caty	Debt Redemption Cost DebtRedemptionCost	0	usd
	caty	Debt Redemption Cost DebtRedemptionCost	732000	usd
CY2022Q3	caty	Business Combination Acquisition And Integration Costs BusinessCombinationAcquisitionAndIntegrationCosts	59000	usd
CY2021Q3	caty	Business Combination Acquisition And Integration Costs BusinessCombinationAcquisitionAndIntegrationCosts	476000	usd
	caty	Business Combination Acquisition And Integration Costs BusinessCombinationAcquisitionAndIntegrationCosts	4086000	usd
	caty	Business Combination Acquisition And Integration Costs BusinessCombinationAcquisitionAndIntegrationCosts	476000	usd
CY2022Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	5085000	usd
CY2021Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	4965000	usd
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	14227000	usd
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	15005000	usd
CY2022Q3	us-gaap	Noninterest Expense NoninterestExpense	75388000	usd
CY2021Q3	us-gaap	Noninterest Expense NoninterestExpense	72215000	usd
	us-gaap	Noninterest Expense NoninterestExpense	222208000	usd
	us-gaap	Noninterest Expense NoninterestExpense	213325000	usd
CY2022Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	130017000	usd
CY2021Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	89435000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	341258000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	283285000	usd
CY2022Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	30982000	usd
CY2021Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	17038000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	78217000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	60305000	usd
CY2022Q3	us-gaap	Net Income Loss NetIncomeLoss	99035000	usd
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	72397000	usd
	us-gaap	Net Income Loss NetIncomeLoss	263041000	usd
	us-gaap	Net Income Loss NetIncomeLoss	222980000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-43191000	usd
CY2021Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-3232000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-115612000	usd
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-7872000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	1645000	usd
CY2021Q3	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	492000	usd
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	5803000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-5678000	usd
CY2022Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	57489000	usd
CY2022Q3	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	0	usd
CY2022Q3	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	849000	usd
CY2021Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	69657000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	153232000	usd
CY2022Q3	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	46290000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	217302000	usd
CY2022Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.35
CY2021Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.93
CY2022Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1816000	usd
CY2022Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	25059000	usd
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.53
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.83
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.52
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.82
CY2022Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.34
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax	2194000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-41546000	usd
CY2021Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.31
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.02
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.93
CY2022Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	73158096
CY2021Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	77846424
CY2022Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.35
CY2021Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.93
CY2022Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	73444096
CY2021Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	78153408
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	74799324
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	79128644
CY2022Q2	us-gaap	Stockholders Equity StockholdersEquity	2431532000	usd
CY2022Q3	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	920000	usd
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	74475032
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	78841899
CY2022Q3	caty	Commitments To Extend Credit Fair Value CommitmentsToExtendCreditFairValue	-14650000	usd
CY2022Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-41546000	usd
CY2022Q3	us-gaap	Net Income Loss NetIncomeLoss	99035000	usd
CY2022Q3	us-gaap	Stockholders Equity StockholdersEquity	2419559000	usd
CY2021Q2	us-gaap	Stockholders Equity StockholdersEquity	2452357000	usd
CY2021Q3	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	894000	usd
CY2021Q3	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	0	usd
CY2021Q3	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	38000	usd
CY2021Q3	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	37139000	usd
CY2021Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1697000	usd
CY2021Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	24137000	usd
CY2021Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-2740000	usd
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	72397000	usd
CY2021Q3	us-gaap	Stockholders Equity StockholdersEquity	2463291000	usd
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	2446251000	usd
	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	2792000	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	849000	usd
	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	2864000	usd
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	109774000	usd
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	5183000	usd
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	76111000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-109809000	usd
	us-gaap	Net Income Loss NetIncomeLoss	263041000	usd
CY2022Q3	us-gaap	Stockholders Equity StockholdersEquity	2419559000	usd
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	2418144000	usd
	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	2619000	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	2632000	usd
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	100668000	usd
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4149000	usd
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	73335000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-5678000	usd
	us-gaap	Net Income Loss NetIncomeLoss	222980000	usd
CY2021Q3	us-gaap	Stockholders Equity StockholdersEquity	2463291000	usd
	us-gaap	Net Income Loss NetIncomeLoss	263041000	usd
	us-gaap	Net Income Loss NetIncomeLoss	222980000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	13143000	usd
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	-19508000	usd
	caty	Provision Reversal For Losses On Other Real Estate Owned ProvisionReversalForLossesOnOtherRealEstateOwned	0	usd
	caty	Provision Reversal For Losses On Other Real Estate Owned ProvisionReversalForLossesOnOtherRealEstateOwned	-8000	usd
	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	713000	usd
	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-8867000	usd
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	6847000	usd
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	5942000	usd
	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	7446000	usd
	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	5972000	usd
	us-gaap	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	-3216000	usd
	us-gaap	Increase Decrease In Operating Lease Liability IncreaseDecreaseInOperatingLeaseLiability	-1456000	usd
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	6000	usd
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	120000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	1000	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	357000	usd
	caty	Proceeds From Sale Of Loans Operating Activities ProceedsFromSaleOfLoansOperatingActivities	33000	usd
	caty	Proceeds From Sale Of Loans Operating Activities ProceedsFromSaleOfLoansOperatingActivities	5351000	usd
	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	-0	usd
	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	4994000	usd
	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-46000	usd
	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-55000	usd
	caty	Accretion Amortization Of Investments AccretionAmortizationOfInvestments	27471000	usd
	caty	Accretion Amortization Of Investments AccretionAmortizationOfInvestments	31610000	usd
	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	101000	usd
	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	853000	usd
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-2875000	usd
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-6128000	usd
	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	1257000	usd
	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-3628000	usd
	us-gaap	Employee Benefits And Share Based Compensation Noncash EmployeeBenefitsAndShareBasedCompensationNoncash	6032000	usd
	us-gaap	Employee Benefits And Share Based Compensation Noncash EmployeeBenefitsAndShareBasedCompensationNoncash	4999000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	77012000	usd
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	21607000	usd
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	125345000	usd
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-9082000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	369973000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	237547000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	583992000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	406750000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	130673000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	326527000	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	553000	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	21102000	usd
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	1122519000	usd
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	349924000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	3093000	usd
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	2828000	usd
	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	0	usd
	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	2752000	usd
	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	307000	usd
	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	0	usd
	caty	Net Increase In Investment In Affordable Housing Investing And Alternative Energy Partnerships NetIncreaseInInvestmentInAffordableHousingInvestingAndAlternativeEnergyPartnerships	107000	usd
	caty	Net Increase In Investment In Affordable Housing Investing And Alternative Energy Partnerships NetIncreaseInInvestmentInAffordableHousingInvestingAndAlternativeEnergyPartnerships	19039000	usd
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	73882000	usd
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	-0	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1652060000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-428160000	usd
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	-58316000	usd
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	897713000	usd
	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	340000000	usd
	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	50000000	usd
	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	-0	usd
	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	180000000	usd
	us-gaap	Payments Of Dividends PaymentsOfDividends	76111000	usd
	us-gaap	Payments Of Dividends PaymentsOfDividends	73335000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	109774000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	100668000	usd
	us-gaap	Proceeds From Issuance Of Common Stock Dividend Reinvestment Plan ProceedsFromIssuanceOfCommonStockDividendReinvestmentPlan	2793000	usd
	us-gaap	Proceeds From Issuance Of Common Stock Dividend Reinvestment Plan ProceedsFromIssuanceOfCommonStockDividendReinvestmentPlan	2619000	usd
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	2864000	usd
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	2632000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	95728000	usd
	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	0	usd
	us-gaap	Income Taxes Paid IncomeTaxesPaid	59981000	usd
	caty	Transfers To Other Real Estate Owned From Loans Held For Investment TransfersToOtherRealEstateOwnedFromLoansHeldForInvestment	0	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	593697000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-1186359000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	403084000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	2449704000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	1421078000	usd
CY2022Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	1263345000	usd
	caty	Transfers To Other Real Estate Owned From Loans Held For Investment TransfersToOtherRealEstateOwnedFromLoansHeldForInvestment	205000	usd
	caty	Average Excess Balances Maintained With Federal Reserve Bank AverageExcessBalancesMaintainedWithFederalReserveBank	1300000000	usd
CY2021Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	1824162000	usd
	us-gaap	Interest Paid Net InterestPaidNet	52147000	usd
	us-gaap	Interest Paid Net InterestPaidNet	61574000	usd
	us-gaap	Income Taxes Paid IncomeTaxesPaid	65291000	usd
	caty	Net Change In Unrealized Holding Loss Gain On Securities Available For Sale Net Of Tax NetChangeInUnrealizedHoldingLossGainOnSecuritiesAvailableForSaleNetOfTax	-115612000	usd
	caty	Net Change In Unrealized Holding Loss Gain On Securities Available For Sale Net Of Tax NetChangeInUnrealizedHoldingLossGainOnSecuritiesAvailableForSaleNetOfTax	-7872000	usd
	us-gaap	Change In Unrealized Gain Loss On Fair Value Hedging Instruments1 ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1	5803000	usd
	us-gaap	Change In Unrealized Gain Loss On Fair Value Hedging Instruments1 ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1	2194000	usd
	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	32000	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”), ten limited partnerships investing in affordable housing investments in which the Bank is the sole limited partner, and GBC Venture Capital, Inc. 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, 2022, </em>the Bank operates 25 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;margin:0pt;"> </p>
CY2022Q3	caty	Number Of Limited Partnerships In Housing Investments NumberOfLimitedPartnershipsInHousingInvestments	10	pure
CY2022Q3	caty	Percentage Of Subsidiaries Common Securities Owned By Parent Company PercentageOfSubsidiariesCommonSecuritiesOwnedByParentCompany	1	pure
CY2021	caty	Average Excess Balances Maintained With Federal Reserve Bank AverageExcessBalancesMaintainedWithFederalReserveBank	1600000000	usd
CY2022Q3	us-gaap	Margin Deposit Assets MarginDepositAssets	0	usd
CY2022Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	163484000	usd
CY2021Q4	us-gaap	Margin Deposit Assets MarginDepositAssets	24300000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	639985000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	9198000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	28429000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	1435000	usd
CY2022Q3	us-gaap	Restricted Cash RestrictedCash	32700000	usd
CY2021Q4	us-gaap	Restricted Cash RestrictedCash	690000	usd
CY2022Q3	us-gaap	Net Income Loss NetIncomeLoss	99035000	usd
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	72397000	usd
	us-gaap	Net Income Loss NetIncomeLoss	263041000	usd
	us-gaap	Net Income Loss NetIncomeLoss	222980000	usd
CY2022Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	73158096
CY2021Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	77846424
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	74475032
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	78841899
CY2022Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	286000
CY2021Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	306984
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	324292
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	286745
CY2022Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	73444096
CY2021Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	78153408
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	74799324
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	79128644
CY2022Q3	caty	Average Shares Of Stock Options And Restricted Stock Units With Anti Dilutive Effect AverageSharesOfStockOptionsAndRestrictedStockUnitsWithAntiDilutiveEffect	0
CY2021Q3	caty	Average Shares Of Stock Options And Restricted Stock Units With Anti Dilutive Effect AverageSharesOfStockOptionsAndRestrictedStockUnitsWithAntiDilutiveEffect	884
	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	30130
CY2022Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.35
CY2021Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.93
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.53
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.83
CY2022Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.35
CY2021Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.93
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.52
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.82
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	668414000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	10633000	usd
CY2022Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	195	pure
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	88	pure
CY2022Q3	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0	usd
CY2022Q3	us-gaap	Debt Securities Held To Maturity Transfer To Available For Sale Allowance For Credit Loss Expense DebtSecuritiesHeldToMaturityTransferToAvailableForSaleAllowanceForCreditLossExpense	0	usd
CY2021Q3	us-gaap	Debt Securities Held To Maturity Transfer To Available For Sale Allowance For Credit Loss Expense DebtSecuritiesHeldToMaturityTransferToAvailableForSaleAllowanceForCreditLossExpense	0	usd
CY2022Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	1659495
CY2022Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1577311000	usd
CY2022Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	584000	usd
CY2022Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	163484000	usd
CY2022Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1414411000	usd
CY2021Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1126867000	usd
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	11075000	usd
CY2021Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	10633000	usd
CY2021Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1127309000	usd
CY2022Q3	us-gaap	Debt Securities Available For Sale Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss	4500000	usd
CY2022Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	282514000	usd
CY2022Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	280897000	usd
CY2022Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	176541000	usd
CY2022Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	159389000	usd
CY2022Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	147198000	usd
CY2022Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	138428000	usd
CY2022Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	971058000	usd
CY2022Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	835697000	usd
CY2022Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1577311000	usd
CY2022Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1414411000	usd
CY2022Q3	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-3700000	usd
CY2021Q3	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	3000000	usd
	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	1300000	usd
	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-3600000	usd
CY2022Q3	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	23100000	usd
CY2021Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	22300000	usd
CY2022Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	936267000	usd
CY2022Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	76305000	usd
CY2022Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	410491000	usd
CY2022Q3	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	87179000	usd
CY2022Q3	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	1346758000	usd
	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	2	pure
CY2022Q3	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	18106803000	usd
CY2021Q4	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	16342479000	usd
CY2022Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	148817000	usd
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	136157000	usd
CY2022Q3	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	-6936000	usd
CY2021Q4	us-gaap	Financing Receivable Unamortized Loan Commitment Origination Fee And Premium Discount FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount	-4321000	usd
CY2022Q3	us-gaap	Notes Receivable Net NotesReceivableNet	17951050000	usd
CY2021Q4	us-gaap	Notes Receivable Net NotesReceivableNet	16202001000	usd
CY2022Q3	caty	Percentage Of Charge Off To Contractual Balances For Impaired Loans PercentageOfChargeOffToContractualBalancesForImpairedLoans	0.122	pure
CY2021Q4	caty	Percentage Of Charge Off To Contractual Balances For Impaired Loans PercentageOfChargeOffToContractualBalancesForImpairedLoans	0.107	pure
CY2022Q3	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	62474000	usd
CY2022Q3	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	198000	usd
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	72442000	usd
	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	528000	usd
CY2021Q3	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	67775000	usd
CY2021Q3	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	197000	usd
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	74239000	usd
	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	540000	usd
CY2022Q3	us-gaap	Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance	29911000	usd
CY2022Q3	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	23259000	usd
CY2022Q3	us-gaap	Impaired Financing Receivable With Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance	58379000	usd
CY2022Q3	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	44866000	usd
CY2022Q3	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	6198000	usd
CY2022Q3	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	88290000	usd
CY2022Q3	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	68125000	usd
CY2022Q3	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	6198000	usd
CY2021Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance	46336000	usd
CY2021Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	38401000	usd
CY2021Q4	us-gaap	Impaired Financing Receivable With Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance	38272000	usd
CY2021Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	27445000	usd
CY2021Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	4547000	usd
CY2021Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	84608000	usd
CY2021Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	65846000	usd
CY2021Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	4547000	usd
CY2022Q3	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	18106803000	usd
CY2021Q4	us-gaap	Financing Receivable Before Allowance For Credit Loss And Fee FinancingReceivableBeforeAllowanceForCreditLossAndFee	16342479000	usd
CY2022Q3	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	6	pure
	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	1165000	usd
CY2021Q3	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	479000	usd
CY2022Q3	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	4038000	usd
CY2022Q3	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	4014000	usd
CY2022Q3	caty	Financing Receivables Impaired Troubled Debt Restructuring Specific Reserve FinancingReceivablesImpairedTroubledDebtRestructuringSpecificReserve	0	usd
CY2022Q3	us-gaap	Financing Receivables Impaired Troubled Debt Restructuring Write Down FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown	0	usd
CY2021Q3	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	1	pure
CY2021Q3	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	479000	usd
	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	1165000	usd
	caty	Financing Receivables Impaired Troubled Debt Restructuring Specific Reserve FinancingReceivablesImpairedTroubledDebtRestructuringSpecificReserve	0	usd
	us-gaap	Financing Receivables Impaired Troubled Debt Restructuring Write Down FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown	14000	usd
CY2021Q3	caty	Financing Receivables Impaired Troubled Debt Restructuring Specific Reserve FinancingReceivablesImpairedTroubledDebtRestructuringSpecificReserve	0	usd
CY2021Q3	us-gaap	Financing Receivables Impaired Troubled Debt Restructuring Write Down FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown	14000	usd
	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	14	pure
	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	10877000	usd
	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	10849000	usd
	caty	Financing Receivables Impaired Troubled Debt Restructuring Specific Reserve FinancingReceivablesImpairedTroubledDebtRestructuringSpecificReserve	0	usd
	us-gaap	Financing Receivables Impaired Troubled Debt Restructuring Write Down FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown	2570000	usd
CY2022Q3	us-gaap	Loans And Leases Receivable Impaired Commitment To Lend LoansAndLeasesReceivableImpairedCommitmentToLend	0	usd
CY2022Q3	us-gaap	Financing Receivable Originated In Current Fiscal Year FinancingReceivableOriginatedInCurrentFiscalYear	3161112000	usd
CY2022Q3	us-gaap	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear	3598844000	usd
CY2022Q3	us-gaap	Financing Receivable Originated Two Years Before Latest Fiscal Year FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear	2041923000	usd
CY2022Q3	us-gaap	Financing Receivable Originated Three Years Before Latest Fiscal Year FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear	1992174000	usd
CY2022Q3	us-gaap	Financing Receivable Originated Four Years Before Latest Fiscal Year FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear	1587043000	usd
CY2022Q3	us-gaap	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear	3378606000	usd
CY2022Q3	us-gaap	Financing Receivable Revolving FinancingReceivableRevolving	2309983000	usd
CY2022Q3	us-gaap	Financing Receivable Revolving Converted To Term Loan FinancingReceivableRevolvingConvertedToTermLoan	30182000	usd
CY2022Q3	us-gaap	Notes Receivable Gross NotesReceivableGross	18099867000	usd
	caty	Financing Receivable Year One Originated Current Fiscal Year Allowance For Credit Loss Write Off FinancingReceivableYearOneOriginatedCurrentFiscalYearAllowanceForCreditLossWriteOff	72000	usd
	caty	Financing Receivable Year Two Originated Allowance For Credit Loss Write Off After Recovery FinancingReceivableYearTwoOriginatedAllowanceForCreditLossWriteOffAfterRecovery	134000	usd
	caty	Financing Receivable Year Three Originated Two Years Before Current Fiscal Year Allowance For Credit Loss Write Off After Recovery FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery	138000	usd
	caty	Financing Receivable Year Four Originated Three Years Before Current Fiscal Year Allowance For Credit Loss Write Off After Recovery FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery	-109000	usd
	caty	Financing Receivable Year Five Originated Four Years Before Current Fiscal Year Allowance For Credit Loss Write Off After Recovery FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery	1622000	usd
	caty	Financing Receivable Originated More Than Five Years Before Current Fiscal Year Allowance For Credit Loss Write Off After Recovery FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery	-260000	usd
	caty	Financing Receivable Revolving Allowance For Credit Loss Write Off After Recovery FinancingReceivableRevolvingAllowanceForCreditLossWriteOffAfterRecovery	-1536000	usd
	caty	Financing Receivable Revolving Converted To Term Loan Writeoff After Recovery FinancingReceivableRevolvingConvertedToTermLoanWriteoffAfterRecovery	-12000	usd
	us-gaap	Financing Receivable Allowance For Credit Loss Writeoff After Recovery FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery	49000	usd
CY2021Q4	us-gaap	Financing Receivable Originated In Current Fiscal Year FinancingReceivableOriginatedInCurrentFiscalYear	3731615000	usd
CY2021Q4	us-gaap	Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear	2371671000	usd
CY2021Q4	us-gaap	Financing Receivable Originated Two Years Before Latest Fiscal Year FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear	2361902000	usd
CY2021Q4	us-gaap	Financing Receivable Originated Three Years Before Latest Fiscal Year FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear	1885467000	usd
CY2021Q4	us-gaap	Financing Receivable Originated Four Years Before Latest Fiscal Year FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear	1344458000	usd
CY2021Q4	us-gaap	Financing Receivable Originated Five Or More Years Before Latest Fiscal Year FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear	2492497000	usd
CY2021Q4	us-gaap	Financing Receivable Revolving FinancingReceivableRevolving	2107052000	usd
CY2021Q4	us-gaap	Financing Receivable Revolving Converted To Term Loan FinancingReceivableRevolvingConvertedToTermLoan	43496000	usd
CY2021Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	16338158000	usd
CY2021	caty	Financing Receivable Year One Originated Current Fiscal Year Allowance For Credit Loss Write Off FinancingReceivableYearOneOriginatedCurrentFiscalYearAllowanceForCreditLossWriteOff	0	usd
CY2021	caty	Financing Receivable Year Two Originated Allowance For Credit Loss Write Off After Recovery FinancingReceivableYearTwoOriginatedAllowanceForCreditLossWriteOffAfterRecovery	1477000	usd
CY2021	caty	Financing Receivable Year Three Originated Two Years Before Current Fiscal Year Allowance For Credit Loss Write Off After Recovery FinancingReceivableYearThreeOriginatedTwoYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery	238000	usd
CY2022Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	2228000	usd
CY2022Q3	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	1671000	usd
CY2021	caty	Financing Receivable Year Four Originated Three Years Before Current Fiscal Year Allowance For Credit Loss Write Off After Recovery FinancingReceivableYearFourOriginatedThreeYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery	242000	usd
CY2021	caty	Financing Receivable Year Five Originated Four Years Before Current Fiscal Year Allowance For Credit Loss Write Off After Recovery FinancingReceivableYearFiveOriginatedFourYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery	3000	usd
CY2022Q3	us-gaap	Financing Receivable Allowance For Credit Loss Writeoff After Recovery FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery	557000	usd
CY2021	caty	Financing Receivable Originated More Than Five Years Before Current Fiscal Year Allowance For Credit Loss Write Off After Recovery FinancingReceivableOriginatedMoreThanFiveYearsBeforeCurrentFiscalYearAllowanceForCreditLossWriteOffAfterRecovery	-453000	usd
CY2022Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	148817000	usd
CY2021Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	131256000	usd
CY2021	caty	Financing Receivable Revolving Allowance For Credit Loss Write Off After Recovery FinancingReceivableRevolvingAllowanceForCreditLossWriteOffAfterRecovery	16168000	usd
CY2021	caty	Financing Receivable Revolving Converted To Term Loan Writeoff After Recovery FinancingReceivableRevolvingConvertedToTermLoanWriteoffAfterRecovery	-64000	usd
CY2021	us-gaap	Financing Receivable Allowance For Credit Loss Writeoff After Recovery FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery	17611000	usd
CY2022Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	148772000	usd
CY2022Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	602000	usd
CY2021Q3	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	3000000	usd
CY2021Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	2652000	usd
CY2021Q3	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	341000	usd
CY2021Q3	us-gaap	Financing Receivable Allowance For Credit Loss Writeoff After Recovery FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery	2311000	usd
CY2021Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	131945000	usd
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	136157000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	12709000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	2500000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	2451000	usd
	us-gaap	Financing Receivable Allowance For Credit Loss Writeoff After Recovery FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery	49000	usd
CY2022Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	148817000	usd
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	166538000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-15710000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	19502000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	2179000	usd
	us-gaap	Financing Receivable Allowance For Credit Loss Writeoff After Recovery FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery	17323000	usd
CY2021Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	131945000	usd
CY2022Q3	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	225000000.0	usd
CY2021Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	0	usd
CY2022Q3	us-gaap	Junior Subordinated Long Term Notes JuniorSubordinatedLongTermNotes	119100000	usd
CY2021Q4	us-gaap	Junior Subordinated Long Term Notes JuniorSubordinatedLongTermNotes	119100000	usd
CY2021Q4	caty	Commitments To Extend Notional Amount CommitmentsToExtendNotionalAmount	3297362000	usd
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.229	pure
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.213	pure
CY2022Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1414411000	usd
CY2022Q3	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	23123000	usd
CY2022Q3	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	1536830000	usd
CY2022Q3	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	56497000	usd
CY2021Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1127309000	usd
CY2021Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	22319000	usd
CY2021Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	1160854000	usd
CY2021Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	12969000	usd
CY2022Q3	us-gaap	Asset Impairment Charges AssetImpairmentCharges	1786000	usd
CY2021Q3	us-gaap	Asset Impairment Charges AssetImpairmentCharges	-47000	usd
	us-gaap	Asset Impairment Charges AssetImpairmentCharges	1786000	usd
	us-gaap	Asset Impairment Charges AssetImpairmentCharges	2172000	usd
CY2021	us-gaap	Asset Impairment Charges AssetImpairmentCharges	1172000	usd
CY2020	us-gaap	Asset Impairment Charges AssetImpairmentCharges	7836000	usd
CY2022Q3	caty	Notional Amount Of Foreign Currency Derivative Purchase Contracts With Gain NotionalAmountOfForeignCurrencyDerivativePurchaseContractsWithGain	162518000	usd
CY2022Q3	caty	Foreign Exchange Contract Asset Fair Value Gain Disclosure ForeignExchangeContractAssetFairValueGainDisclosure	752000	usd
CY2021Q4	caty	Notional Amount Of Foreign Currency Derivative Purchase Contracts With Gain NotionalAmountOfForeignCurrencyDerivativePurchaseContractsWithGain	181997000	usd
CY2021Q4	caty	Foreign Exchange Contract Asset Fair Value Gain Disclosure ForeignExchangeContractAssetFairValueGainDisclosure	1113000	usd
CY2022Q3	us-gaap	Derivative Asset Notional Amount DerivativeAssetNotionalAmount	1464567000	usd
CY2022Q3	us-gaap	Interest Rate Derivative Assets At Fair Value InterestRateDerivativeAssetsAtFairValue	98498000	usd
CY2021Q4	us-gaap	Derivative Asset Notional Amount DerivativeAssetNotionalAmount	904635000	usd
CY2021Q4	us-gaap	Interest Rate Derivative Assets At Fair Value InterestRateDerivativeAssetsAtFairValue	10090000	usd
CY2022Q3	caty	Options Options	0	usd
CY2022Q3	caty	Option Contracts Fair Value OptionContractsFairValue	0	usd
CY2021Q4	caty	Options Options	676000	usd
CY2021Q4	caty	Option Contracts Fair Value OptionContractsFairValue	3000	usd
CY2022Q3	caty	Notional Amount Of Foreign Currency Derivative Purchase Contracts With Loss NotionalAmountOfForeignCurrencyDerivativePurchaseContractsWithLoss	45990000	usd
CY2022Q3	caty	Foreign Currency Contract Asset Fair Value Loss Disclosure ForeignCurrencyContractAssetFairValueLossDisclosure	2054000	usd
CY2021Q4	caty	Notional Amount Of Foreign Currency Derivative Purchase Contracts With Loss NotionalAmountOfForeignCurrencyDerivativePurchaseContractsWithLoss	51782000	usd
CY2021Q4	caty	Foreign Currency Contract Asset Fair Value Loss Disclosure ForeignCurrencyContractAssetFairValueLossDisclosure	327000	usd
CY2022Q3	us-gaap	Derivative Liability Notional Amount DerivativeLiabilityNotionalAmount	691872000	usd
CY2022Q3	us-gaap	Interest Rate Derivative Liabilities At Fair Value InterestRateDerivativeLiabilitiesAtFairValue	54443000	usd
CY2021Q4	us-gaap	Derivative Liability Notional Amount DerivativeLiabilityNotionalAmount	872400000	usd
CY2021Q4	us-gaap	Interest Rate Derivative Liabilities At Fair Value InterestRateDerivativeLiabilitiesAtFairValue	12642000	usd
CY2022Q3	caty	Commitments To Extend Notional Amount CommitmentsToExtendNotionalAmount	3537547000	usd
CY2021Q4	caty	Commitments To Extend Credit Fair Value CommitmentsToExtendCreditFairValue	-12594000	usd
CY2022Q3	caty	Standby Letters Of Credit Notional Amount StandbyLettersOfCreditNotionalAmount	290618000	usd
CY2022Q3	caty	Standby Letters Of Credit Fair Value StandbyLettersOfCreditFairValue	-2048000	usd
CY2021Q4	caty	Standby Letters Of Credit Notional Amount StandbyLettersOfCreditNotionalAmount	266490000	usd
CY2021Q4	caty	Standby Letters Of Credit Fair Value StandbyLettersOfCreditFairValue	-2640000	usd
CY2022Q3	caty	Other Letters Of Credit Notional Amount OtherLettersOfCreditNotionalAmount	13070000	usd
CY2022Q3	caty	Other Letters Of Credit Fair Value OtherLettersOfCreditFairValue	-12000	usd
CY2021Q4	caty	Other Letters Of Credit Notional Amount OtherLettersOfCreditNotionalAmount	16652000	usd
CY2021Q4	caty	Other Letters Of Credit Fair Value OtherLettersOfCreditFairValue	-13000	usd
CY2022Q3	us-gaap	Goodwill Goodwill	375700000	usd
CY2021Q4	us-gaap	Goodwill Goodwill	372200000	usd
CY2014Q2	us-gaap	Junior Subordinated Notes JuniorSubordinatedNotes	119100000	usd
CY2022Q3	caty	Periodic Net Settlements On Interest Rate Swaps Income PeriodicNetSettlementsOnInterestRateSwapsIncome	1461000	usd
CY2021Q3	caty	Periodic Net Settlements On Interest Rate Swaps Income PeriodicNetSettlementsOnInterestRateSwapsIncome	-2363000	usd
	caty	Periodic Net Settlements On Interest Rate Swaps Income PeriodicNetSettlementsOnInterestRateSwapsIncome	-1628000	usd
	caty	Periodic Net Settlements On Interest Rate Swaps Income PeriodicNetSettlementsOnInterestRateSwapsIncome	-7137000	usd
	caty	Noninteres Income Not Inscope NoninteresIncomeNotInscope	12353000	usd
	caty	Noninteres Income Not Inscope NoninteresIncomeNotInscope	6230000	usd
CY2022Q3	us-gaap	Noninterest Income NoninterestIncome	9876000	usd
CY2021Q3	us-gaap	Noninterest Income NoninterestIncome	12216000	usd
CY2022Q3	us-gaap	Derivative Assets DerivativeAssets	98498000	usd
CY2022Q3	caty	Net Amount Of Derivative Assets Presented In The Balance Sheet NetAmountOfDerivativeAssetsPresentedInTheBalanceSheet	98498000	usd
CY2022Q3	us-gaap	Derivative Asset Fair Value Of Collateral DerivativeAssetFairValueOfCollateral	95783000	usd
CY2022Q3	caty	Net Amount Of Derivative Assets Presented In The Balance Sheet Not Offset NetAmountOfDerivativeAssetsPresentedInTheBalanceSheetNotOffset	2715000	usd
CY2022Q3	us-gaap	Derivative Liabilities DerivativeLiabilities	54443000	usd
CY2022Q3	caty	Net Amount Of Derivative Liabilities Presented In The Balance Sheet NetAmountOfDerivativeLiabilitiesPresentedInTheBalanceSheet	54443000	usd
CY2022Q3	us-gaap	Derivative Liability Fair Value Of Collateral DerivativeLiabilityFairValueOfCollateral	54443	usd
CY2021Q4	us-gaap	Derivative Assets DerivativeAssets	10090000	usd
CY2021Q4	caty	Net Amount Of Derivative Assets Presented In The Balance Sheet NetAmountOfDerivativeAssetsPresentedInTheBalanceSheet	10090000	usd
CY2021Q4	caty	Net Amount Of Derivative Assets Presented In The Balance Sheet Not Offset NetAmountOfDerivativeAssetsPresentedInTheBalanceSheetNotOffset	10090000	usd
CY2021Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	15748000	usd
CY2021Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	3106	usd
CY2021Q4	caty	Net Amount Of Derivative Liabilities Presented In The Balance Sheet NetAmountOfDerivativeLiabilitiesPresentedInTheBalanceSheet	12642000	usd
CY2021Q4	us-gaap	Derivative Liability Fair Value Of Collateral DerivativeLiabilityFairValueOfCollateral	12642000	usd
CY2022Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	11033000	usd
CY2021Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	9443000	usd
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	32373000	usd
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	28569000	usd
CY2022Q3	caty	Noninteres Income Not Inscope NoninteresIncomeNotInscope	-1157000	usd
CY2021Q3	caty	Noninteres Income Not Inscope NoninteresIncomeNotInscope	2773000	usd
	us-gaap	Noninterest Income NoninterestIncome	44726000	usd
	us-gaap	Noninterest Income NoninterestIncome	34799000	usd
CY2022Q3	us-gaap	Stockholders Equity StockholdersEquity	2420000000	usd
	us-gaap	Stockholders Equity Period Increase Decrease StockholdersEquityPeriodIncreaseDecrease	26700000	usd
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	2450000000	usd
	us-gaap	Net Income Loss NetIncomeLoss	263000000.0	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	5200000	usd
	us-gaap	Proceeds From Issuance Of Common Stock Dividend Reinvestment Plan ProceedsFromIssuanceOfCommonStockDividendReinvestmentPlan	2800000	usd
	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	800000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-109800000	usd
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	109800000	usd
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	76100000	usd
	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	2900000	usd
CY2022Q2	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	125000000.0	usd
CY2022Q3	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	1080000.00
CY2022Q3	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	46300000	usd
CY2022Q3	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	42.88

Files In Submission

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$CATY
CATHAY GENERAL BANCORP Stock $caty

2022 Q4 Form 10-Q Financial Statement

#000143774922026389 Filed on November 08, 2022

Income Statement

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Facts In Submission

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$CATY CATHAY GENERAL BANCORP Stock $caty

2022 Q4 Form 10-Q Financial Statement

#000143774922026389 Filed on November 08, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CATY
CATHAY GENERAL BANCORP Stock $caty