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v2.4.1.9

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

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- Definition Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522 + Details
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- Definition Amount classified as loans attributable to disposal group held for sale or disposed of. Excludes loans and leases covered under loss sharing agreements and loans classified as debt securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Subparagraph a -Article 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(a)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 35 -Paragraph 49 -URI http://asc.fasb.org/extlink&oid=35742846&loc=d3e3084-111518 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section 30 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6490209&loc=d3e48214-111002 + Details
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