XML 21 R70.htm IDEA: XBRL DOCUMENT v2.4.1.9
Note 5 - Loans (Details) - Portfolio by Risk Rating (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Financing Receivable, Recorded Investment [Line Items]    
Loans $ 8,914,080us-gaap_LoansAndLeasesReceivableGrossCarryingAmount $ 8,084,563us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
Loans held for sale 973us-gaap_LoansReceivableHeldForSaleNet  
Commercial Loans [Member] | Pass [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans 2,260,474us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_CommercialLoansMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember		 2,108,191us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_CommercialLoansMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
Commercial Loans [Member] | Special Mention [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans 47,619us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_CommercialLoansMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember		 84,786us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_CommercialLoansMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember
Commercial Loans [Member] | Substandard [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans 72,561us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_CommercialLoansMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember		 102,088us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_CommercialLoansMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
Commercial Loans [Member] | Doubtful [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans 1,839us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_CommercialLoansMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_DoubtfulMember		 3,659us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_CommercialLoansMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_DoubtfulMember
Commercial Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans 2,382,493us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_CommercialLoansMember		 2,298,724us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_CommercialLoansMember
Real Estate Construction Loans [Member] | Pass [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans 272,927us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_RealEstateConstructionLoansMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember		 184,449us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_RealEstateConstructionLoansMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
Real Estate Construction Loans [Member] | Substandard [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans 25,227us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_RealEstateConstructionLoansMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember		 33,939us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_RealEstateConstructionLoansMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
Real Estate Construction Loans [Member] | Doubtful [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans 500us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_RealEstateConstructionLoansMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_DoubtfulMember		 3,313us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_RealEstateConstructionLoansMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_DoubtfulMember
Real Estate Construction Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans 298,654us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_RealEstateConstructionLoansMember		 221,701us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_RealEstateConstructionLoansMember
Commercial Mortgage Loans [Member] | Pass [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans 4,213,453us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_CommercialMortgageLoansMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember		 3,686,788us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_CommercialMortgageLoansMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
Commercial Mortgage Loans [Member] | Special Mention [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans 105,970us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_CommercialMortgageLoansMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember		 127,436us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_CommercialMortgageLoansMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember
Commercial Mortgage Loans [Member] | Substandard [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans 167,020us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_CommercialMortgageLoansMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember		 208,827us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_CommercialMortgageLoansMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
Commercial Mortgage Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans 4,486,443us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_CommercialMortgageLoansMember		 4,023,051us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_CommercialMortgageLoansMember
Residential Mortgage And Equity Lines Member | Pass [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans 1,733,248us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_ResidentialMortgageAndEquityLinesMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember		 1,510,647us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_ResidentialMortgageAndEquityLinesMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
Residential Mortgage And Equity Lines Member | Substandard [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans 9,690us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_ResidentialMortgageAndEquityLinesMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember		 15,885us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_ResidentialMortgageAndEquityLinesMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
Residential Mortgage And Equity Lines Member    
Financing Receivable, Recorded Investment [Line Items]    
Loans 1,742,938us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_ResidentialMortgageAndEquityLinesMember		 1,526,532us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_ResidentialMortgageAndEquityLinesMember
Installment And Other Loans [Member] | Pass [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans 3,552us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_InstallmentAndOtherLoansMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember		 14,555us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_InstallmentAndOtherLoansMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
Installment And Other Loans [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans 3,552us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_InstallmentAndOtherLoansMember		 14,555us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= caty_InstallmentAndOtherLoansMember
Pass [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans 8,483,654us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember		 7,504,630us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
Special Mention [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans 153,589us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember		 212,222us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember
Substandard [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans 274,498us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember		 360,739us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
Loans held for sale 973us-gaap_LoansReceivableHeldForSaleNet
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember		  
Doubtful [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Loans $ 2,339us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_DoubtfulMember		 $ 6,972us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_DoubtfulMember