$CATY
CATHAY GENERAL BANCORP Stock $caty

$caty Overview Financials Valuation SEC Filings Company Website

2020 Q4 Form 10-Q Financial Statement

#000143774920023058 Filed on November 09, 2020

Income Statement

Concept	2020 Q4	2020 Q3	2019 Q3
Revenue		$172.2M	$197.8M
YoY Change		-12.94%	11.85%
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	$2.100M	$1.900M	$1.700M
YoY Change	16.67%	11.76%	0.0%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$27.78M	$34.73M	$50.83M
YoY Change	-44.46%	-31.68%	59.94%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$81.23M	$58.98M	$93.81M
YoY Change	-2.92%	-37.12%	6.05%
Income Tax	$10.33M	$2.190M	$20.97M
% Of Pretax Income	12.72%	3.71%	22.36%
Net Earnings	$70.89M	$56.79M	$72.84M
YoY Change	5.22%	-22.02%	4.41%
Net Earnings / Revenue		32.97%	36.82%
Basic Earnings Per Share	$0.89	$0.71	$0.91
Diluted Earnings Per Share	$0.89	$0.71	$0.91
COMMON SHARES
Basic Shares Outstanding	79.66M	79.63M	79.74M
Diluted Shares Outstanding		79.76M	79.99M

Balance Sheet

Concept	2020 Q4	2020 Q3	2019 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$1.421B	$1.434B	$825.1M
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	$103.0M	$103.4M	$103.8M
YoY Change	-1.19%	-0.37%	1.22%
Goodwill	$372.2M	$372.2M	$372.2M
YoY Change	0.0%	0.0%	0.0%
Intangibles	$5.434M	$5.631M	$6.821M
YoY Change	-13.69%	-17.45%	-7.71%
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	$19.04B	$19.02B	$18.00B
YoY Change	5.24%	5.63%	9.37%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$33.00M	$35.00M	$36.00M
YoY Change	-8.33%	-2.78%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00
YoY Change	-100.0%
Long-Term Debt Due	$0.00	$0.00	$26.00M
YoY Change		-100.0%	36.84%
Total Short-Term Liabilities	$33.00M	$35.00M	$62.00M
YoY Change	-8.33%	-43.55%	226.32%
LONG-TERM LIABILITIES
Long-Term Debt	$143.0M	$143.0M	$165.0M
YoY Change	-3.38%	-13.33%	-14.51%
Other Long-Term Liabilities	$176.0M	$188.0M	$261.0M
YoY Change	-18.89%	-27.97%	14.98%
Total Long-Term Liabilities	$319.0M	$331.0M	$426.0M
YoY Change	-12.6%	-22.3%	1.43%
TOTAL LIABILITIES
Total Short-Term Liabilities	$33.00M	$35.00M	$62.00M
Total Long-Term Liabilities	$319.0M	$331.0M	$426.0M
Total Liabilities	$16.62B	$16.64B	$15.76B
YoY Change	5.22%	5.61%	9.86%
SHAREHOLDERS EQUITY
Retained Earnings	$1.789B	$1.743B	$1.616B
YoY Change	7.85%	7.83%	12.3%
Common Stock	$906.0K	$904.0K	$900.0K
YoY Change	0.67%	0.44%	0.45%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$342.1M	$331.4M	$318.5M
YoY Change	7.41%	4.04%	32.95%
Treasury Stock Shares	$11.13M	$10.73M	$10.33M
Shareholders Equity	$2.418B	$2.375B	$2.246B
YoY Change
Total Liabilities & Shareholders Equity	$19.04B	$19.02B	$18.00B
YoY Change	5.24%	5.63%	9.37%

Cashflow Statement

Concept	2020 Q4	2020 Q3	2019 Q3
OPERATING ACTIVITIES
Net Income	$70.89M	$56.79M	$72.84M
YoY Change	5.22%	-22.02%	4.41%
Depreciation, Depletion And Amortization	$2.100M	$1.900M	$1.700M
YoY Change	16.67%	11.76%	0.0%
Cash From Operating Activities	$86.90M	$60.90M	$150.2M
YoY Change	-21.92%	-59.45%	68.39%
INVESTING ACTIVITIES
Capital Expenditures	-$1.400M	-$1.100M	-$2.400M
YoY Change	-30.0%	-54.17%	33.33%
Acquisitions
YoY Change
Other Investing Activities	-$65.50M	$79.50M	-$183.2M
YoY Change	-82.76%	-143.4%	46.79%
Cash From Investing Activities	-$66.90M	$78.40M	-$185.7M
YoY Change	-82.49%	-142.22%	46.91%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-32.90M	-279.0M	302.9M
YoY Change	-183.5%	-192.11%	40.75%
NET CHANGE
Cash From Operating Activities	86.90M	60.90M	150.2M
Cash From Investing Activities	-66.90M	78.40M	-185.7M
Cash From Financing Activities	-32.90M	-279.0M	302.9M
Net Change In Cash	-12.90M	-139.7M	267.4M
YoY Change	-94.42%	-152.24%	50.22%
FREE CASH FLOW
Cash From Operating Activities	$86.90M	$60.90M	$150.2M
Capital Expenditures	-$1.400M	-$1.100M	-$2.400M
Free Cash Flow	$88.30M	$62.00M	$152.6M
YoY Change	-22.07%	-59.37%	67.69%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2019Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	10334963
CY2020Q3	caty	Number Of Limited Partnerships In Housing Investments NumberOfLimitedPartnershipsInHousingInvestments	10	pure
CY2020Q2	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	25000000	USD
	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	0	USD
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CY2020Q3	caty	Periodic Net Settlements On Interest Rate Swaps Income PeriodicNetSettlementsOnInterestRateSwapsIncome	-2510000	USD
CY2019Q3	caty	Periodic Net Settlements On Interest Rate Swaps Income PeriodicNetSettlementsOnInterestRateSwapsIncome	205000	USD
	caty	Periodic Net Settlements On Interest Rate Swaps Income PeriodicNetSettlementsOnInterestRateSwapsIncome	-5307000	USD
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CY2019Q3	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	364000	USD
	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	-1928000	USD
	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	7764000	USD
CY2020Q3	us-gaap	Debt Securities Gain Loss DebtSecuritiesGainLoss	0	USD
CY2019Q3	us-gaap	Debt Securities Gain Loss DebtSecuritiesGainLoss	-121000	USD
	us-gaap	Debt Securities Gain Loss DebtSecuritiesGainLoss	1153000	USD
	us-gaap	Debt Securities Gain Loss DebtSecuritiesGainLoss	-108000	USD
CY2020Q3	caty	Letter Of Credit Commissions LetterOfCreditCommissions	1792000	USD
	caty	Depository Service Fees DepositoryServiceFees	3678000	USD
	caty	Depository Service Fees DepositoryServiceFees	3617000	USD
CY2020Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	8527000	USD
CY2019Q3	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	7424000	USD
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	23474000	USD
	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	20097000	USD
CY2020Q3	us-gaap	Noninterest Income NoninterestIncome	9977000	USD
CY2019Q3	us-gaap	Noninterest Income NoninterestIncome	10388000	USD
	us-gaap	Noninterest Income NoninterestIncome	31369000	USD
	us-gaap	Noninterest Income NoninterestIncome	36103000	USD
CY2020Q3	us-gaap	Salaries Wages And Officers Compensation SalariesWagesAndOfficersCompensation	33341000	USD
CY2019Q3	us-gaap	Salaries Wages And Officers Compensation SalariesWagesAndOfficersCompensation	31915000	USD
	us-gaap	Salaries Wages And Officers Compensation SalariesWagesAndOfficersCompensation	92477000	USD
	us-gaap	Salaries Wages And Officers Compensation SalariesWagesAndOfficersCompensation	97200000	USD
CY2020Q3	us-gaap	Occupancy Net OccupancyNet	5295000	USD
CY2019Q3	us-gaap	Occupancy Net OccupancyNet	5579000	USD
	us-gaap	Equipment Expense EquipmentExpense	8453000	USD
CY2020Q3	us-gaap	Professional Fees ProfessionalFees	5241000	USD
CY2019Q3	us-gaap	Professional Fees ProfessionalFees	5952000	USD
	us-gaap	Professional Fees ProfessionalFees	15586000	USD
	us-gaap	Professional Fees ProfessionalFees	17209000	USD
CY2020Q3	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	3772000	USD
CY2019Q3	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	3246000	USD
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	11004000	USD
	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	9737000	USD
CY2020Q3	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	1993000	USD
CY2019Q3	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	2582000	USD
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	6854000	USD
	us-gaap	Federal Deposit Insurance Corporation Premium Expense FederalDepositInsuranceCorporationPremiumExpense	7190000	USD
CY2020Q3	us-gaap	Marketing Expense MarketingExpense	1089000	USD
CY2019Q3	us-gaap	Marketing Expense MarketingExpense	2436000	USD
	us-gaap	Marketing Expense MarketingExpense	3890000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-2496000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	1233000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	8880000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	21216000	USD
	us-gaap	Marketing Expense MarketingExpense	5556000	USD
CY2020Q3	caty	Foreclosed Real Estate Expense Income ForeclosedRealEstateExpenseIncome	423000	USD
CY2019Q3	caty	Foreclosed Real Estate Expense Income ForeclosedRealEstateExpenseIncome	190000	USD
	caty	Foreclosed Real Estate Expense Income ForeclosedRealEstateExpenseIncome	-3229000	USD
	caty	Foreclosed Real Estate Expense Income ForeclosedRealEstateExpenseIncome	839000	USD
CY2020Q3	caty	Operations Of Affordable Housing Investments Net And Alternative Energy Partnerships Net OperationsOfAffordableHousingInvestmentsNetAndAlternativeEnergyPartnershipsNet	16173000	USD
CY2019Q3	caty	Operations Of Affordable Housing Investments Net And Alternative Energy Partnerships Net OperationsOfAffordableHousingInvestmentsNetAndAlternativeEnergyPartnershipsNet	6997000	USD
	caty	Operations Of Affordable Housing Investments Net And Alternative Energy Partnerships Net OperationsOfAffordableHousingInvestmentsNetAndAlternativeEnergyPartnershipsNet	42997000	USD
	caty	Operations Of Affordable Housing Investments Net And Alternative Energy Partnerships Net OperationsOfAffordableHousingInvestmentsNetAndAlternativeEnergyPartnershipsNet	26909000	USD
CY2020Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	172000	USD
	us-gaap	Noninterest Expense NoninterestExpense	206096000	USD
CY2020Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	58984000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	93808000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	172740000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	265702000	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2190000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	20973000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	14773000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	53944000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	56794000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	72835000	USD
	us-gaap	Net Income Loss NetIncomeLoss	157967000	USD
	us-gaap	Net Income Loss NetIncomeLoss	211758000	USD
CY2019Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	172000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	515000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	515000	USD
CY2020Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	5454000	USD
CY2019Q3	us-gaap	Other Noninterest Expense OtherNoninterestExpense	3770000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	14672000	USD
	us-gaap	Other Noninterest Expense OtherNoninterestExpense	15871000	USD
CY2020Q3	us-gaap	Noninterest Expense NoninterestExpense	75997000	USD
CY2019Q3	us-gaap	Noninterest Expense NoninterestExpense	65580000	USD
	us-gaap	Noninterest Expense NoninterestExpense	208419000	USD
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.91
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.98
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.64
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.71
CY2020Q3	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	867000	USD
CY2020Q3	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	0	USD
CY2020Q3	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	532000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-793000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-3981000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-4119000	USD
CY2020Q3	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	0	USD
CY2019Q3	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-85000	USD
	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	812000	USD
	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-76000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-1964000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	525000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	4087000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	17173000	USD
CY2020Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	54830000	USD
CY2019Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	73360000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	162054000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	228931000	USD
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.71
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.91
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.98
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.64
CY2020Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.31
CY2019Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.31
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.93
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.93
CY2020Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	79628372
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	79736814
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	79599288
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	80096855
CY2020Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	79764318
CY2019Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	79993830
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	79758943
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	80330616
CY2020Q2	us-gaap	Stockholders Equity StockholdersEquity	2342448000	USD
CY2020Q3	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	4000	USD
CY2020Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1264000	USD
CY2020Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	24682000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-1964000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	56794000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	2374723000	USD
CY2019Q2	us-gaap	Stockholders Equity StockholdersEquity	2199297000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	74014000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	4087000	USD
	us-gaap	Net Income Loss NetIncomeLoss	157967000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	2374723000	USD
CY2019Q3	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	841000	USD
CY2019Q3	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	4692000	USD
CY2019Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1789000	USD
CY2019Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	24701000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	525000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	72835000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	2245894000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	2294283000	USD
	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	2573000	USD
	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	2000	USD
	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	1903000	USD
	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	800000	USD
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	12880000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3808000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	2121866000	USD
	us-gaap	Stock Issued During Period Value Dividend Reinvestment Plan StockIssuedDuringPeriodValueDividendReinvestmentPlan	2522000	USD
	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	1000	USD
	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	2300000	USD
	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	749000	USD
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	36301000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4848000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	74422000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	17173000	USD
	us-gaap	Net Income Loss NetIncomeLoss	211758000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	2245894000	USD
	us-gaap	Net Income Loss NetIncomeLoss	157967000	USD
	us-gaap	Net Income Loss NetIncomeLoss	211758000	USD
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	62500000	USD
	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	-2000000	USD
	caty	Provision Reversal For Losses On Other Real Estate Owned ProvisionReversalForLossesOnOtherRealEstateOwned	717000	USD
	caty	Provision Reversal For Losses On Other Real Estate Owned ProvisionReversalForLossesOnOtherRealEstateOwned	494000	USD
	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	10305000	USD
	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-9911000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	5644000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	5009000	USD
	caty	Amortization Of Right Of Use Asset Operating Lease AmortizationOfRightOfUseAssetOperatingLease	6624000	USD
	caty	Amortization Of Right Of Use Asset Operating Lease AmortizationOfRightOfUseAssetOperatingLease	6248000	USD
	caty	Change In Operating Lease Liabilities ChangeInOperatingLeaseLiabilities	-757000	USD
	caty	Change In Operating Lease Liabilities ChangeInOperatingLeaseLiabilities	-5298000	USD
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	4216000	USD
	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	193000	USD
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	219000	USD
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	795000	USD
	caty	Proceeds From Sale Of Loans Operating Activities ProceedsFromSaleOfLoansOperatingActivities	6406000	USD
	caty	Proceeds From Sale Of Loans Operating Activities ProceedsFromSaleOfLoansOperatingActivities	38742000	USD
	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	6187000	USD
	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	-0	USD
	caty	Accretion Amortization Of Investments AccretionAmortizationOfInvestments	42904000	USD
	caty	Accretion Amortization Of Investments AccretionAmortizationOfInvestments	27009000	USD
	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	1153000	USD
	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	-108000	USD
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-6211000	USD
	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-2376000	USD
	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-45000	USD
	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-0	USD
	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-1928000	USD
	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	7764000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	4608000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	5597000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	13000000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	31640000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-26597000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	64186000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	233120000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	323748000	USD
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	272961000	USD
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	539979000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	107539000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	149725000	USD
	us-gaap	Proceeds From Sale Of Trading Securities Heldforinvestment ProceedsFromSaleOfTradingSecuritiesHeldforinvestment	3112000	USD
	us-gaap	Proceeds From Sale Of Trading Securities Heldforinvestment ProceedsFromSaleOfTradingSecuritiesHeldforinvestment	0	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	543114000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	233058000	USD
	us-gaap	Payments To Acquire Federal Home Loan Bank Stock PaymentsToAcquireFederalHomeLoanBankStock	840000	USD
	us-gaap	Payments To Acquire Federal Home Loan Bank Stock PaymentsToAcquireFederalHomeLoanBankStock	975000	USD
	us-gaap	Proceeds From Sale Of Federal Home Loan Bank Stock ProceedsFromSaleOfFederalHomeLoanBankStock	1680000	USD
	us-gaap	Proceeds From Sale Of Federal Home Loan Bank Stock ProceedsFromSaleOfFederalHomeLoanBankStock	975000	USD
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	496732000	USD
	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	803291000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	4372000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	5125000	USD
	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	4308000	USD
	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	1905000	USD
	caty	Net Increase In Investment In Affordable Housing Investing And Alternative Energy Partnerships NetIncreaseInInvestmentInAffordableHousingInvestingAndAlternativeEnergyPartnerships	60129000	USD
	caty	Net Increase In Investment In Affordable Housing Investing And Alternative Energy Partnerships NetIncreaseInInvestmentInAffordableHousingInvestingAndAlternativeEnergyPartnerships	35952000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-175281000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-999659000	USD
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	1342019000	USD
	us-gaap	Increase Decrease In Deposits IncreaseDecreaseInDeposits	955679000	USD
	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	1450000000	USD
	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	3610000000	USD
	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	1890000000	USD
	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	3540000000	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	74014000	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	74422000	USD
	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	7663000	USD
	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	39918000	USD
	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	0	USD
	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	25507000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	12880000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	36301000	USD
	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	25683000	USD
	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	-0	USD
	us-gaap	Proceeds From Issuance Of Common Stock Dividend Reinvestment Plan ProceedsFromIssuanceOfCommonStockDividendReinvestmentPlan	2573000	USD
	us-gaap	Proceeds From Issuance Of Common Stock Dividend Reinvestment Plan ProceedsFromIssuanceOfCommonStockDividendReinvestmentPlan	2522000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1903000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	2300000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	782449000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	900767000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	840288000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	224856000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	593778000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	600290000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	1434066000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	825146000	USD
	us-gaap	Interest Paid Net InterestPaidNet	133151000	USD
	us-gaap	Interest Paid Net InterestPaidNet	137422000	USD
	us-gaap	Income Taxes Paid IncomeTaxesPaid	35490000	USD
	us-gaap	Income Taxes Paid IncomeTaxesPaid	43507000	USD
	caty	Net Change In Unrealized Holding Loss Gain On Securities Available For Sale Net Of Tax NetChangeInUnrealizedHoldingLossGainOnSecuritiesAvailableForSaleNetOfTax	8068000	USD
	caty	Net Change In Unrealized Holding Loss Gain On Securities Available For Sale Net Of Tax NetChangeInUnrealizedHoldingLossGainOnSecuritiesAvailableForSaleNetOfTax	21292000	USD
	us-gaap	Change In Unrealized Gain Loss On Fair Value Hedging Instruments1 ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1	-3981000	USD
	us-gaap	Change In Unrealized Gain Loss On Fair Value Hedging Instruments1 ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1	-4119000	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	860000	USD
	us-gaap	Transfer Of Loans Held For Sale To Portfolio Loans1 TransferOfLoansHeldForSaleToPortfolioLoans1	0	USD
	us-gaap	Transfer Of Loans Held For Sale To Portfolio Loans1 TransferOfLoansHeldForSaleToPortfolioLoans1	75285000	USD
	us-gaap	Nature Of Operations NatureOfOperations	<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><i><b><span style="text-decoration: underline; "><em style="font: inherit;">1.</em> Business</span></b></i></p> <p style="font-family: 'Times New Roman', Times, serif; font-size: 10pt; margin-top: 0pt; margin-bottom: 0pt;"> </p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Cathay General Bancorp (“Bancorp”) is the holding company for Cathay Bank (the “Bank” and, together, with Bancorp, the “Company”), <span style="-sec-ix-hidden:c66667312">ten</span> limited partnerships investing in affordable housing investments in which the Bank is the sole limited partner, Asia Realty Corp. 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, 2020, </em>the Bank operates 25 branches in Southern California, 13 branches in Northern California, 10 branches in New York State, <span style="-sec-ix-hidden:c66667319">four</span> in Washington State, <span style="-sec-ix-hidden:c66667320">three</span> in Illinois, <span style="-sec-ix-hidden:c66667321">two</span> in Texas, <span style="-sec-ix-hidden:c66667322"><span style="-sec-ix-hidden:c66667325"><span style="-sec-ix-hidden:c66667326"><span style="-sec-ix-hidden:c66667327">one</span></span></span></span> in Maryland, Massachusetts, Nevada, and New Jersey, <span style="-sec-ix-hidden:c66667323">one</span> 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>
CY2020Q3	caty	Percentage Of Subsidiaries Common Securities Owned By Parent Company PercentageOfSubsidiariesCommonSecuritiesOwnedByParentCompany	1	pure
CY2020Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	25000000	USD
CY2020Q3	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	12500000	USD
	caty	Average Reserve Balances Required To Be Maintained With Federal Bank AverageReserveBalancesRequiredToBeMaintainedWithFederalBank	78000	USD
CY2019	caty	Average Reserve Balances Required To Be Maintained With Federal Bank AverageReserveBalancesRequiredToBeMaintainedWithFederalBank	110000	USD
CY2020Q3	us-gaap	Margin Deposit Assets MarginDepositAssets	39000000.0	USD
CY2019Q4	us-gaap	Margin Deposit Assets MarginDepositAssets	17700000	USD
CY2020Q3	us-gaap	Restricted Cash RestrictedCash	21800000	USD
CY2019Q4	us-gaap	Restricted Cash RestrictedCash	18900000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1443730000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	9852000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	1740000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	56794000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	72835000	USD
	us-gaap	Net Income Loss NetIncomeLoss	157967000	USD
	us-gaap	Net Income Loss NetIncomeLoss	211758000	USD
CY2020Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	79628372
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	79736814
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	79599288
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	80096855
CY2020Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	79764318
CY2019Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	79993830
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	79758943
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	80330616
CY2020Q3	caty	Average Shares Of Stock Options And Restricted Stock Units With Anti Dilutive Effect AverageSharesOfStockOptionsAndRestrictedStockUnitsWithAntiDilutiveEffect	117621
CY2019Q3	caty	Average Shares Of Stock Options And Restricted Stock Units With Anti Dilutive Effect AverageSharesOfStockOptionsAndRestrictedStockUnitsWithAntiDilutiveEffect	32321
	caty	Average Shares Of Stock Options And Restricted Stock Units With Anti Dilutive Effect AverageSharesOfStockOptionsAndRestrictedStockUnitsWithAntiDilutiveEffect	97110
	caty	Average Shares Of Stock Options And Restricted Stock Units With Anti Dilutive Effect AverageSharesOfStockOptionsAndRestrictedStockUnitsWithAntiDilutiveEffect	47690
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.71
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.91
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.98
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.64
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.71
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.91
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.98
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.64
CY2019Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	493705000	USD
CY2019Q4	us-gaap	Availableforsale Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Greater Than Or Equal To One Year AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsGreaterThanOrEqualToOneYear	1740	pure
CY2020Q3	caty	Pledged Investment Securities PledgedInvestmentSecurities	18600000	USD
CY2019Q4	caty	Pledged Investment Securities PledgedInvestmentSecurities	20100000	USD
	caty	Benefit Shortfall Of Tax Deductions From Sharebased Compensation BenefitShortfallOfTaxDeductionsFromSharebasedCompensation	400000	USD
	caty	Benefit Shortfall Of Tax Deductions From Sharebased Compensation BenefitShortfallOfTaxDeductionsFromSharebasedCompensation	600000	USD
CY2020Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1060975000	USD
CY2020Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	20810000	USD
CY2020Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	1245000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1080540000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1451842000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	182047000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	182289000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	44028000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	44044000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	176079000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	178429000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	658821000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	675778000	USD
CY2020Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1060975000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1080540000	USD
CY2020Q3	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-1600000	USD
CY2019Q3	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	400000	USD
	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-1900000	USD
	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	7800000	USD
CY2020Q3	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	23000000.0	USD
CY2019Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	28000000.0	USD
CY2020Q3	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	69510000	USD
CY2020Q3	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	261000	USD
CY2020Q3	us-gaap	Available For Sale Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Less Than One Year AvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsLessThanOneYear	49948	pure
CY2020Q3	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	984000	USD
CY2020Q3	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	119458000	USD
CY2020Q3	us-gaap	Availableforsale Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Greater Than Or Equal To One Year AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsGreaterThanOrEqualToOneYear	1245	pure
CY2019Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	144339000	USD
CY2019Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	231000	USD
CY2019Q4	us-gaap	Available For Sale Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions Less Than One Year AvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsLessThanOneYear	349366	pure
CY2019Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	1509000	USD
CY2020Q3	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	15565779000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	15075481000	USD
CY2020Q3	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	179130000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	123224000	USD
CY2020Q3	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	4210000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	626000	USD
CY2020Q3	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	15382439000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	14951631000	USD
CY2020Q3	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	105800000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	75900000	USD
CY2020Q3	caty	Percentage Of Charge Off To Contractual Balances For Impaired Loans PercentageOfChargeOffToContractualBalancesForImpairedLoans	0.061	pure
CY2019Q4	caty	Percentage Of Charge Off To Contractual Balances For Impaired Loans PercentageOfChargeOffToContractualBalancesForImpairedLoans	0.021	pure
CY2020Q3	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	92031000	USD
CY2020Q3	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	588000	USD
CY2019Q3	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	97153000	USD
CY2019Q3	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	618000	USD
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	88137000	USD
	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	1653000	USD
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	110315000	USD
	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	1976000	USD
CY2020Q3	us-gaap	Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance	52903000	USD
CY2020Q3	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	47974000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance	41315000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	35540000	USD
CY2020Q3	us-gaap	Impaired Financing Receivable With Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance	65829000	USD
CY2020Q3	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	57804000	USD
CY2020Q3	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	8495000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable With Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance	41626000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	40319000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	3236000	USD
CY2020Q3	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	118732000	USD
CY2020Q3	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	105778000	USD
CY2020Q3	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	8495000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	82941000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	75859000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	3236000	USD
CY2020Q3	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	77191000	USD
CY2020Q3	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	118257000	USD
CY2020Q3	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	15447522000	USD
CY2020Q3	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	15565779000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	40523000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	131462000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	14944019000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	15075481000	USD
CY2020Q3	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	2	pure
CY2020Q3	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	2983000	USD
CY2020Q3	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	2983000	USD
CY2020Q3	us-gaap	Financing Receivables Impaired Troubled Debt Restructuring Write Down FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown	0	USD
CY2020Q3	caty	Financing Receivables Impaired Troubled Debt Restructuring Specific Reserve FinancingReceivablesImpairedTroubledDebtRestructuringSpecificReserve	203000	USD
CY2019Q3	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	3	pure
CY2019Q3	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	7585000	USD
CY2019Q3	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	6165000	USD
CY2019Q3	us-gaap	Financing Receivables Impaired Troubled Debt Restructuring Write Down FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown	0	USD
CY2019Q3	caty	Financing Receivables Impaired Troubled Debt Restructuring Specific Reserve FinancingReceivablesImpairedTroubledDebtRestructuringSpecificReserve	89000	USD
	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	5	pure
	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	5417000	USD
	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	5417000	USD
	us-gaap	Financing Receivables Impaired Troubled Debt Restructuring Write Down FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown	0	USD
	caty	Financing Receivables Impaired Troubled Debt Restructuring Specific Reserve FinancingReceivablesImpairedTroubledDebtRestructuringSpecificReserve	203000	USD
CY2020Q3	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	15460001000	USD
CY2020Q3	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	179130000	USD
CY2020Q3	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	15565779000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	3236000	USD
	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	23	pure
	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	25937000	USD
	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	10814000	USD
	us-gaap	Financing Receivables Impaired Troubled Debt Restructuring Write Down FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown	0	USD
	caty	Financing Receivables Impaired Troubled Debt Restructuring Specific Reserve FinancingReceivablesImpairedTroubledDebtRestructuringSpecificReserve	125000	USD
CY2020Q3	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	15565779000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	15075481000	USD
CY2020Q3	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	8495000	USD
CY2020Q3	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	105778000	USD
CY2020Q3	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	170635000	USD
CY2019Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	75859000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	119988000	USD
CY2019Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	14999622000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	123224000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Gross Carrying Amount LoansAndLeasesReceivableGrossCarryingAmount	15075481000	USD
CY2020Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	169680000	USD
CY2020Q3	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	12500000	USD
CY2020Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	6956000	USD
CY2020Q3	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	3906000	USD
CY2020Q3	caty	Financing Receivable Allowance For Credit Losses Net Charge Offs FinancingReceivableAllowanceForCreditLossesNetChargeOffs	-3050000	USD
CY2020Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	179130000	USD
CY2019Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	122651000	USD
CY2019Q3	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	-2000000	USD
CY2019Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	3356000	USD
CY2019Q3	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	8613000	USD
CY2019Q3	caty	Financing Receivable Allowance For Credit Losses Net Charge Offs FinancingReceivableAllowanceForCreditLossesNetChargeOffs	5257000	USD
CY2019Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	125908000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	123224000	USD
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	62500000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	13383000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	6789000	USD
	caty	Financing Receivable Allowance For Credit Losses Net Charge Offs FinancingReceivableAllowanceForCreditLossesNetChargeOffs	-6594000	USD
CY2020Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	179130000	USD
CY2020Q3	caty	Reserve To Impaired Loans ReserveToImpairedLoans	8495000	USD
CY2020Q3	caty	Reserve To Non Impaired Loans ReserveToNonImpairedLoans	170635000	USD
CY2020Q3	caty	Reserve For Off Balance Sheet Credit Commitments ReserveForOffBalanceSheetCreditCommitments	5663000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	122391000	USD
	us-gaap	Provision For Loan Lease And Other Losses ProvisionForLoanLeaseAndOtherLosses	-2000000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	6300000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	11817000	USD
	caty	Financing Receivable Allowance For Credit Losses Net Charge Offs FinancingReceivableAllowanceForCreditLossesNetChargeOffs	5517000	USD
CY2019Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	125908000	USD
CY2019Q3	caty	Reserve To Impaired Loans ReserveToImpairedLoans	1501000	USD
CY2019Q3	caty	Reserve To Non Impaired Loans ReserveToNonImpairedLoans	124407000	USD
CY2019Q3	caty	Reserve For Off Balance Sheet Credit Commitments ReserveForOffBalanceSheetCreditCommitments	4550000	USD
CY2020Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	32600000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	34000000.0	USD
CY2020Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	35100000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	35900000	USD
CY2020Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y10M24D
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y4M24D
CY2020Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0279	pure
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0310	pure
CY2020Q3	us-gaap	Operating Lease Expense OperatingLeaseExpense	3100000	USD
CY2019Q3	us-gaap	Operating Lease Expense OperatingLeaseExpense	3300000	USD
	us-gaap	Operating Lease Expense OperatingLeaseExpense	8800000	USD
	us-gaap	Operating Lease Expense OperatingLeaseExpense	10100000	USD
CY2020Q3	us-gaap	Operating Lease Payments OperatingLeasePayments	2200000	USD
CY2019Q3	us-gaap	Operating Lease Payments OperatingLeasePayments	2100000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	6800000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	6200000	USD
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.086	pure
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.203	pure
	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	400000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	2392000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	9235000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	8183000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	6758000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	4570000	USD
CY2020Q3	caty	Lessee Operating Lease Liability To Be Paid After Year Four LesseeOperatingLeaseLiabilityToBePaidAfterYearFour	6641000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	37779000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	2663000	USD
CY2020Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	35116000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	8764000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	7923000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	6771000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	5714000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	3852000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	6199000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	39223000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	3350000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	35873000	USD
CY2020Q3	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	0	USD
CY2019Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	450000000	USD
CY2020Q3	us-gaap	Junior Subordinated Long Term Notes JuniorSubordinatedLongTermNotes	119100000	USD
CY2020Q3	us-gaap	Junior Subordinated Long Term Notes JuniorSubordinatedLongTermNotes	119100000	USD
CY2020Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1080540000	USD
CY2020Q3	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	22964000	USD
CY2020Q3	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	1110752000	USD
CY2020Q3	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	33123000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1451842000	USD
CY2019Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	28005000	USD
CY2019Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	1484478000	USD
CY2019Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	15651000	USD
CY2020Q3	us-gaap	Asset Impairment Charges AssetImpairmentCharges	6953000	USD
CY2019Q3	us-gaap	Asset Impairment Charges AssetImpairmentCharges	203000	USD
CY2020Q3	caty	Bill Of Lading Guarantees Fair Value BillOfLadingGuaranteesFairValue	0	USD
CY2019Q4	caty	Bill Of Lading Guarantees Notional Amount BillOfLadingGuaranteesNotionalAmount	319000	USD
CY2019Q4	caty	Bill Of Lading Guarantees Fair Value BillOfLadingGuaranteesFairValue	-1000	USD
CY2020Q3	caty	Net Amount Of Derivative Liabilities Presented In The Balance Sheet NetAmountOfDerivativeLiabilitiesPresentedInTheBalanceSheet	11278000	USD
	us-gaap	Asset Impairment Charges AssetImpairmentCharges	7774000	USD
	us-gaap	Asset Impairment Charges AssetImpairmentCharges	715000	USD
CY2020Q3	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	4900000	USD
CY2019	us-gaap	Asset Impairment Charges AssetImpairmentCharges	848000	USD
CY2018	us-gaap	Asset Impairment Charges AssetImpairmentCharges	-289000	USD
CY2019Q4	us-gaap	Other Real Estate And Foreclosed Assets OtherRealEstateAndForeclosedAssets	10200000	USD
CY2020Q3	caty	Notional Amount Of Foreign Currency Derivative Purchase Contracts With Gain NotionalAmountOfForeignCurrencyDerivativePurchaseContractsWithGain	107071000	USD
CY2020Q3	caty	Foreign Exchange Contract Asset Fair Value Gain Disclosure ForeignExchangeContractAssetFairValueGainDisclosure	3236000	USD
CY2019Q4	caty	Notional Amount Of Foreign Currency Derivative Purchase Contracts With Gain NotionalAmountOfForeignCurrencyDerivativePurchaseContractsWithGain	146397000	USD
CY2019Q4	caty	Foreign Exchange Contract Asset Fair Value Gain Disclosure ForeignExchangeContractAssetFairValueGainDisclosure	2411000	USD
CY2020Q3	us-gaap	Derivative Asset Notional Amount DerivativeAssetNotionalAmount	72717000	USD
CY2020Q3	us-gaap	Interest Rate Derivative Assets At Fair Value InterestRateDerivativeAssetsAtFairValue	3992000	USD
CY2019Q4	us-gaap	Derivative Asset Notional Amount DerivativeAssetNotionalAmount	130401000	USD
CY2019Q4	us-gaap	Interest Rate Derivative Assets At Fair Value InterestRateDerivativeAssetsAtFairValue	2181000	USD
CY2020Q3	caty	Options Options	850000	USD
CY2020Q3	caty	Option Contracts Fair Value OptionContractsFairValue	6000	USD
CY2019Q4	caty	Options Options	908000	USD
CY2019Q4	caty	Option Contracts Fair Value OptionContractsFairValue	7000	USD
CY2020Q3	caty	Notional Amount Of Foreign Currency Derivative Purchase Contracts With Loss NotionalAmountOfForeignCurrencyDerivativePurchaseContractsWithLoss	160489000	USD
CY2020Q3	caty	Foreign Currency Contract Asset Fair Value Loss Disclosure ForeignCurrencyContractAssetFairValueLossDisclosure	1592000	USD
CY2019Q4	caty	Notional Amount Of Foreign Currency Derivative Purchase Contracts With Loss NotionalAmountOfForeignCurrencyDerivativePurchaseContractsWithLoss	127003000	USD
CY2019Q4	caty	Foreign Currency Contract Asset Fair Value Loss Disclosure ForeignCurrencyContractAssetFairValueLossDisclosure	1415000	USD
CY2020Q3	us-gaap	Derivative Liability Notional Amount DerivativeLiabilityNotionalAmount	686785000	USD
CY2020Q3	us-gaap	Interest Rate Derivative Liabilities At Fair Value InterestRateDerivativeLiabilitiesAtFairValue	31525000	USD
CY2019Q4	us-gaap	Derivative Liability Notional Amount DerivativeLiabilityNotionalAmount	602291000	USD
CY2019Q4	us-gaap	Interest Rate Derivative Liabilities At Fair Value InterestRateDerivativeLiabilitiesAtFairValue	14229000	USD
CY2020Q3	caty	Commitments To Extend Notional Amount CommitmentsToExtendNotionalAmount	3033685000	USD
CY2020Q3	caty	Commitments To Extend Credit Fair Value CommitmentsToExtendCreditFairValue	-8847000	USD
CY2019Q4	caty	Commitments To Extend Notional Amount CommitmentsToExtendNotionalAmount	3077081000	USD
CY2019Q4	caty	Commitments To Extend Credit Fair Value CommitmentsToExtendCreditFairValue	-9826000	USD
CY2020Q3	caty	Standby Letters Of Credit Notional Amount StandbyLettersOfCreditNotionalAmount	255173000	USD
CY2020Q3	caty	Standby Letters Of Credit Fair Value StandbyLettersOfCreditFairValue	-1647000	USD
CY2019Q4	caty	Standby Letters Of Credit Notional Amount StandbyLettersOfCreditNotionalAmount	282352000	USD
CY2019Q4	caty	Standby Letters Of Credit Fair Value StandbyLettersOfCreditFairValue	-2431000	USD
CY2020Q3	caty	Other Letters Of Credit Notional Amount OtherLettersOfCreditNotionalAmount	24591000	USD
CY2020Q3	caty	Other Letters Of Credit Fair Value OtherLettersOfCreditFairValue	-21000	USD
CY2019Q4	caty	Other Letters Of Credit Notional Amount OtherLettersOfCreditNotionalAmount	22209000	USD
CY2019Q4	caty	Other Letters Of Credit Fair Value OtherLettersOfCreditFairValue	-20000	USD
CY2020Q3	caty	Bill Of Lading Guarantees Notional Amount BillOfLadingGuaranteesNotionalAmount	221000	USD
CY2020Q3	us-gaap	Derivative Liability Fair Value Of Collateral DerivativeLiabilityFairValueOfCollateral	-0	USD
CY2019Q4	us-gaap	Derivative Assets DerivativeAssets	2181000	USD
CY2019Q4	caty	Net Amount Of Derivative Assets Presented In The Balance Sheet NetAmountOfDerivativeAssetsPresentedInTheBalanceSheet	2181000	USD
CY2019Q4	us-gaap	Derivative Asset Fair Value Of Collateral DerivativeAssetFairValueOfCollateral	-0	USD
CY2019Q4	caty	Net Amount Of Derivative Assets Presented In The Balance Sheet Not Offset NetAmountOfDerivativeAssetsPresentedInTheBalanceSheetNotOffset	2181000	USD
CY2019Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	14229000	USD
CY2014Q2	us-gaap	Junior Subordinated Notes JuniorSubordinatedNotes	119100000	USD
CY2020Q3	us-gaap	Derivative Assets DerivativeAssets	3992000	USD
CY2020Q3	caty	Net Amount Of Derivative Assets Presented In The Balance Sheet NetAmountOfDerivativeAssetsPresentedInTheBalanceSheet	3992000	USD
CY2020Q3	us-gaap	Derivative Asset Fair Value Of Collateral DerivativeAssetFairValueOfCollateral	0	USD
CY2020Q3	caty	Net Amount Of Derivative Assets Presented In The Balance Sheet Not Offset NetAmountOfDerivativeAssetsPresentedInTheBalanceSheetNotOffset	3992000	USD
CY2020Q3	us-gaap	Derivative Liabilities DerivativeLiabilities	31525000	USD
CY2019Q4	caty	Net Amount Of Derivative Liabilities Presented In The Balance Sheet NetAmountOfDerivativeLiabilitiesPresentedInTheBalanceSheet	14229000	USD
CY2019Q4	us-gaap	Derivative Liability Fair Value Of Collateral DerivativeLiabilityFairValueOfCollateral	14229000	USD
CY2020Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	8322000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	7586000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	23957000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	22791000	USD
CY2020Q3	caty	Noninteres Income Not Inscope NoninteresIncomeNotInscope	1655000	USD
CY2019Q3	caty	Noninteres Income Not Inscope NoninteresIncomeNotInscope	2802000	USD
	caty	Noninteres Income Not Inscope NoninteresIncomeNotInscope	7412000	USD
	caty	Noninteres Income Not Inscope NoninteresIncomeNotInscope	13312000	USD
CY2020Q3	us-gaap	Noninterest Income NoninterestIncome	9977000	USD
CY2019Q3	us-gaap	Noninterest Income NoninterestIncome	10388000	USD
	us-gaap	Noninterest Income NoninterestIncome	31369000	USD
	us-gaap	Noninterest Income NoninterestIncome	36103000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	2370000000	USD
	us-gaap	Stockholders Equity Period Increase Decrease StockholdersEquityPeriodIncreaseDecrease	80400000000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	2290000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	158000000.0	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	4100000	USD
	us-gaap	Proceeds From Issuance Of Common Stock Dividend Reinvestment Plan ProceedsFromIssuanceOfCommonStockDividendReinvestmentPlan	2600000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	74000000.0	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	12900000	USD

Files In Submission

Name	View Source	Status
0001437749-20-023058-index-headers.html	Edgar Link	pending
0001437749-20-023058-index.html	Edgar Link	pending
0001437749-20-023058.txt	Edgar Link	pending
0001437749-20-023058-xbrl.zip	Edgar Link	pending
caty-20200930.xsd	Edgar Link	pending
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caty-20200930_def.xml	Edgar Link	unprocessable
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caty-20200930_pre.xml	Edgar Link	unprocessable
caty20200930_10q.htm	Edgar Link	pending
caty20200930_10q_htm.xml	Edgar Link	completed
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ex_211983.htm	Edgar Link	pending
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FilingSummary.xml	Edgar Link	unprocessable
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$CATY
CATHAY GENERAL BANCORP Stock $caty

2020 Q4 Form 10-Q Financial Statement

#000143774920023058 Filed on November 09, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CATY CATHAY GENERAL BANCORP Stock $caty

2020 Q4 Form 10-Q Financial Statement

#000143774920023058 Filed on November 09, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CATY
CATHAY GENERAL BANCORP Stock $caty