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v2.4.1.9

Note 5 - Loans (Details) - Accruing Troubled Debt Restructurings (Accruing Troubled Debt Restructuring [Member], USD $) | Dec. 31, 2014 | Dec. 31, 2013
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Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | $ 104,356,000 us-gaap_FinancingReceivableModificationsRecordedInvestment | $ 117,597,000 us-gaap_FinancingReceivableModificationsRecordedInvestment
Interest Deferral [Member] | Commercial Mortgage Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | 436,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_CommercialMortgageLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = caty_InterestDeferralMember |
Interest Deferral [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | 436,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = caty_InterestDeferralMember |
Principal Deferral [Member] | Commercial Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | 11,572,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_CommercialLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = caty_PrincipalDeferralMember | 9,112,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_CommercialLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = caty_PrincipalDeferralMember
Principal Deferral [Member] | Real Estate Construction Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | 5,765,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_RealEstateConstructionLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = caty_PrincipalDeferralMember |
Principal Deferral [Member] | Commercial Mortgage Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | 20,107,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_CommercialMortgageLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = caty_PrincipalDeferralMember | 11,333,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_CommercialMortgageLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = caty_PrincipalDeferralMember
Principal Deferral [Member] | Residential Mortgage Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | 3,316,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_ResidentialMortgageLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = caty_PrincipalDeferralMember | 1,564,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_ResidentialMortgageLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = caty_PrincipalDeferralMember
Principal Deferral [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | 40,760,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = caty_PrincipalDeferralMember | 22,009,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = caty_PrincipalDeferralMember
Rate Reduction [Member] | Commercial Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs |  | 2,916,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_CommercialLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = caty_RateReductionMember
Rate Reduction [Member] | Commercial Mortgage Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | 26,694,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_CommercialMortgageLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = caty_RateReductionMember | 9,389,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_CommercialMortgageLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = caty_RateReductionMember
Rate Reduction [Member] | Residential Mortgage Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs |  | 1,024,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_ResidentialMortgageLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = caty_RateReductionMember
Rate Reduction [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | 26,694,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = caty_RateReductionMember | 13,329,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = caty_RateReductionMember
Rate Reduction and Forgiveness of Principal [Member] | Residential Mortgage Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | 410,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_ResidentialMortgageLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = caty_RateReductionAndForgivenessOfPrincipalMember |
Rate Reduction and Forgiveness of Principal [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | 410,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = caty_RateReductionAndForgivenessOfPrincipalMember |
Rate Reduction and Payment Deferral [Member] | Commercial Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | 4,934,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_CommercialLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = caty_RateReductionAndPaymentDeferralMember | 2,708,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_CommercialLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = caty_RateReductionAndPaymentDeferralMember
Rate Reduction and Payment Deferral [Member] | Real Estate Construction Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs |  | 5,834,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_RealEstateConstructionLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = caty_RateReductionAndPaymentDeferralMember
Rate Reduction and Payment Deferral [Member] | Commercial Mortgage Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | 26,351,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_CommercialMortgageLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = caty_RateReductionAndPaymentDeferralMember | 70,200,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_CommercialMortgageLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = caty_RateReductionAndPaymentDeferralMember
Rate Reduction and Payment Deferral [Member] | Residential Mortgage Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | 4,771,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_ResidentialMortgageLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = caty_RateReductionAndPaymentDeferralMember | 3,517,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_ResidentialMortgageLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = caty_RateReductionAndPaymentDeferralMember
Rate Reduction and Payment Deferral [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | 36,056,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = caty_RateReductionAndPaymentDeferralMember | 82,259,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember / us-gaap_FinancingReceivableTroubledDebtRestructuringAxis = caty_RateReductionAndPaymentDeferralMember
Commercial Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | 16,506,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_CommercialLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember | 14,736,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_CommercialLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember
Real Estate Construction Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | 5,765,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_RealEstateConstructionLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember | 5,834,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_RealEstateConstructionLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember
Commercial Mortgage Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | 73,588,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_CommercialMortgageLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember | 90,922,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_CommercialMortgageLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember
Residential Mortgage Loans [Member] |  |
Financing Receivable, Modifications [Line Items] |  |
Accruing TDRs | $ 8,497,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_ResidentialMortgageLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember | $ 6,105,000 us-gaap_FinancingReceivableModificationsRecordedInvestment / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_ResidentialMortgageLoansMember / us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis = caty_AccruingTroubledDebtRestructuringMember

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- Definition The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18845-111554 + Details
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