XML 68 R56.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Note 8 - Loans - Troubled Debt Restructuring Activity (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Accruing Troubled Debt Restructuring [Member] |  |  |  |
Beginning balance | $ 82,785 | $ 80,419 | $ 68,565 | $ 65,393
New restructurings | 5,127 | 500 | 22,447 | 28,183
Restructured loans restored to accrual status |  |  | 2,318 |
Payments | (2,855) | (1,100) | (6,746) | (5,695)
Restructured loans placed on non-accrual status | (570) |  | (2,098) | (5,822)
Expiration of loan concession upon renewal |  |  |  | (2,240)
Ending balance | 84,487 | 79,819 | 84,487 | 79,819
Restructured loans placed on non-accrual status | 570 |  | 2,098 | 5,822
Non-accruing Troubled Debt Restructuring [Member] |  |  |  |
Beginning balance | 31,195 | 32,779 | 33,416 | 29,722
New restructurings |  |  | 231 |
Restructured loans restored to accrual status |  |  | (2,318) |
Payments | (1,257) | (2,237) | (2,918) | (3,227)
Restructured loans placed on non-accrual status | (570) |  | (2,098) | (5,822)
Ending balance | 30,347 | 30,045 | 30,347 | 30,045
Restructured loans placed on non-accrual status | 570 |  | 2,098 | 5,822
Charge-offs | (161) | (497) | (161) | (1,546)
Foreclosures |  |  |  | $ (726)

X
- Definition Represents troubled debt restructuring foreclosures. + References No definition available. + Details
Name: | caty_TroubledDebtRestructuringForeclosures
Namespace Prefix: | caty_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents information about troubled debt restructurings, expiration of loan concession upon renewal. + References No definition available. + Details
Name: | caty_TroubledDebtRestructuringsExpirationOfLoanConcessionUponRenewal
Namespace Prefix: | caty_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | caty_TroubledDebtRestructuringsNewRestructurings
Namespace Prefix: | caty_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | caty_TroubledDebtRestructuringsPaymentsReceivedInPeriod
Namespace Prefix: | caty_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | caty_TroubledDebtRestructuringsRestructuredLoansPlacedOnNonaccrual
Namespace Prefix: | caty_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | caty_TroubledDebtRestructuringsRestructuredLoansRestoredToAccrualStatus
Namespace Prefix: | caty_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=82895541&loc=d3e18845-111554 + Details
Name: | us-gaap_FinancingReceivableModificationsRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Reflects the amount of the write-down related to a troubled debt restructuring. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=82895541&loc=d3e18845-111554 + Details
Name: | us-gaap_FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=caty_AccruingTroubledDebtRestructuringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=caty_NonaccruingTroubledDebtRestructuringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |