XML 31 R73.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Note 5 - Loans (Details) - Activity in the Allowance for Credit Losses (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Sep. 30, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Note 5 - Loans (Details) - Activity in the Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Provision/(reversal) for possible loan losses | $ (2,000)caty_ProvisionReversalForPossibleLoanLosses | $ (5,100)caty_ProvisionReversalForPossibleLoanLosses | $ (3,700)caty_ProvisionReversalForPossibleLoanLosses | $ (3,000)caty_ProvisionReversalForPossibleLoanLosses | $ (10,800)caty_ProvisionReversalForPossibleLoanLosses | $ (3,000)caty_ProvisionReversalForPossibleLoanLosses | $ (9,000)caty_ProvisionReversalForPossibleLoanLosses |
Transfers (to)/from reserve for off-balance sheet credit commitments |  |  |  |  | (372)caty_TransfersFromReserveForOffBalanceSheetCreditCommitments |  | 706 caty_TransfersFromReserveForOffBalanceSheetCreditCommitments |
Loans charged off |  |  |  |  | (22,235)us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs | (20,442)us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs | (32,791)us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs |
Recoveries of charged off loans |  |  |  |  | 20,938 us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery | 14,009 us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery | 18,127 us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery |
Reserve for Off-Balance Sheet Credit Commitments [Member] | Beginning of Period [Member] |  |  |  |  |  |  |  |
Note 5 - Loans (Details) - Activity in the Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Balance | 1,363 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_ReserveForOffBalanceSheetCreditCommitmentsMember / us-gaap_CreationDateAxis = caty_BeginningOfPeriodMember |  |  |  | 1,363 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_ReserveForOffBalanceSheetCreditCommitmentsMember / us-gaap_CreationDateAxis = caty_BeginningOfPeriodMember | 1,363 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_ReserveForOffBalanceSheetCreditCommitmentsMember / us-gaap_CreationDateAxis = caty_BeginningOfPeriodMember | 2,069 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_ReserveForOffBalanceSheetCreditCommitmentsMember / us-gaap_CreationDateAxis = caty_BeginningOfPeriodMember |
Reserve for Off-Balance Sheet Credit Commitments [Member] | End of Period [Member] |  |  |  |  |  |  |  |
Note 5 - Loans (Details) - Activity in the Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Balance | 1,949 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_ReserveForOffBalanceSheetCreditCommitmentsMember / us-gaap_CreationDateAxis = caty_EndOfPeriodMember |  |  |  | 1,949 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_ReserveForOffBalanceSheetCreditCommitmentsMember / us-gaap_CreationDateAxis = caty_EndOfPeriodMember | 1,363 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_ReserveForOffBalanceSheetCreditCommitmentsMember / us-gaap_CreationDateAxis = caty_EndOfPeriodMember | 1,363 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_ReserveForOffBalanceSheetCreditCommitmentsMember / us-gaap_CreationDateAxis = caty_EndOfPeriodMember |
Reserve for Off-Balance Sheet Credit Commitments [Member] |  |  |  |  |  |  |  |
Note 5 - Loans (Details) - Activity in the Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Provision/(reversal) for possible loan losses |  |  |  |  | 586 caty_ProvisionReversalForPossibleLoanLosses / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_ReserveForOffBalanceSheetCreditCommitmentsMember |  | (706)caty_ProvisionReversalForPossibleLoanLosses / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = caty_ReserveForOffBalanceSheetCreditCommitmentsMember |
Beginning of Period [Member] |  |  |  |  |  |  |  |
Note 5 - Loans (Details) - Activity in the Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Balance |  |  |  |  |  |  |  | 206,280 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_CreationDateAxis = caty_BeginningOfPeriodMember
Balance |  |  |  |  |  | 173,889 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_CreationDateAxis = caty_BeginningOfPeriodMember | 183,322 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_CreationDateAxis = caty_BeginningOfPeriodMember | 206,280 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_CreationDateAxis = caty_BeginningOfPeriodMember
End of Period [Member] |  |  |  |  |  |  |  |
Note 5 - Loans (Details) - Activity in the Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Balance | $ 161,420 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_CreationDateAxis = caty_EndOfPeriodMember |  |  |  | $ 161,420 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_CreationDateAxis = caty_EndOfPeriodMember | $ 173,889 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_CreationDateAxis = caty_EndOfPeriodMember | $ 183,322 us-gaap_FinancingReceivableAllowanceForCreditLosses / us-gaap_CreationDateAxis = caty_EndOfPeriodMember |

X
- Details
Name: | caty_Note5LoansDetailsActivityintheAllowanceforCreditLossesLineItems
Namespace Prefix: | caty_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of provision (reversal) related to loan transactions based on the assessment of uncollectability from the counterparty to reduce the account to their net realizable value. + References No definition available. + Details
Name: | caty_ProvisionReversalForPossibleLoanLosses
Namespace Prefix: | caty_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Transfers from/to reserve for off balance sheet credit commitments. + References No definition available. + Details
Name: | caty_TransfersFromReserveForOffBalanceSheetCreditCommitments
Namespace Prefix: | caty_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition A valuation allowance for financing receivables that are expected to be uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLosses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of recovery of financing receivables doubtful of collection that were previously charged off. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of direct write-downs of financing receivables charged against the allowance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=caty_ReserveForOffBalanceSheetCreditCommitmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreationDateAxis=caty_BeginningOfPeriodMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreationDateAxis=caty_EndOfPeriodMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |