XML 60 R49.htm IDEA: XBRL DOCUMENT v3.25.1

Note 8 - Loans - Nonaccrual Loans and Related Allowance for Credit Losses (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Loans with no related allowance, unpaid principal balance	$ 159,234	$ 175,678
Loans with no related allowance, recorded investment	141,015	155,266
Loans with related allowance, unpaid principal balance	26,961	26,749
Loans with related allowance, recorded investment	13,611	13,895
Allowance	2,453	1,238
Unpaid principal balance	186,195	202,427
Recorded investment	154,626	169,161
Commercial Portfolio Segment [Member]
Loans with no related allowance, unpaid principal balance	50,294	56,022
Loans with no related allowance, recorded investment	47,257	53,499
Loans with related allowance, unpaid principal balance	18,794	18,769
Loans with related allowance, recorded investment	6,105	6,267
Allowance	2,423	1,208
Commercial Real Estate Portfolio Segment [Member]
Loans with no related allowance, unpaid principal balance	91,320	100,316
Loans with no related allowance, recorded investment	76,622	82,936
Loans with related allowance, unpaid principal balance	187	194
Loans with related allowance, recorded investment	180	193
Allowance	1	1
Residential Mortgage and Equity Lines Portfolio Segment [Member]
Loans with no related allowance, unpaid principal balance	17,620	19,340
Loans with no related allowance, recorded investment	17,136	18,831
Loans with related allowance, unpaid principal balance	7,980	7,786
Loans with related allowance, recorded investment	7,326	7,435
Allowance	$ 29	$ 29

X

- Definition

Allowance on financing receivable on nonaccrual status.

+ References

No definition available.

+ Details

Name:	caty_FinancingReceivableNonaccrualAllowance
Namespace Prefix:	caty_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Unpaid principal balance of financing receivable on nonaccrual status with no allowance. Excludes net investment in lease.

+ References

No definition available.

+ Details

Name:	caty_FinancingReceivableNonaccrualNoAllowanceUnpaidPrincipalBalance
Namespace Prefix:	caty_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Unpaid principal balance of financing receivable on nonaccrual status. Excludes net investment in lease.

+ References

No definition available.

+ Details

Name:	caty_FinancingReceivableNonaccrualUnpaidPrincipalBalance
Namespace Prefix:	caty_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amortized cost of financing receivable on nonaccrual status with allowance. Excludes net investment in lease.

+ References

No definition available.

+ Details

Name:	caty_FinancingReceivableNonaccrualWithAllowance
Namespace Prefix:	caty_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Unpaid principal balance of financing receivable on nonaccrual status with allowance. Excludes net investment in lease.

+ References

No definition available.

+ Details

Name:	caty_FinancingReceivableNonaccrualWithAllowanceUnpaidPrincipalBalance
Namespace Prefix:	caty_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amortized cost of financing receivable on nonaccrual status with no allowance for credit loss. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-16

+ Details

Name:	us-gaap_FinancingReceivableNonaccrualNoAllowance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amortized cost of financing receivable on nonaccrual status. Excludes net investment in lease.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-7

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph a
-Subparagraph (3)
-Publisher SEC

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph a
-Subparagraph (2)
-Publisher SEC

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-16

+ Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=caty_ResidentialMortgageAndEquityLinesPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: