XML 94 R79.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Note 6 - Investments in Affordable Housing and Alternative Energy Partnerships - Usage of Affordable Housing and Other Tax Credits Including Energy Tax Credit (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Affordable housing and other tax credits recognized | $ 32,395 | $ 29,524 | $ 26,459
Alternative energy tax credits recognized | $ 41,320 | $ 4,707 | $ 6,337

X
- Definition The amount of affordable housing and other tax credits recognized during the period. + References No definition available. + Details
Name: | caty_AffordableHousingAndOtherTaxCreditsRecognized
Namespace Prefix: | caty_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of alternative energy tax credit used during the period. + References No definition available. + Details
Name: | caty_AlternativeEnergyTaxCreditUsage
Namespace Prefix: | caty_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration