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Note 22 - Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2024

Notes Tables

Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block]

		Actual								Minimum Capital Required - Basel III								Required to be Considered Well Capitalized
		Capital Amount				Ratio				Capital Amount				Ratio				Capital Amount				Ratio
December 31, 2024		(In thousands)
Common Equity Tier 1 to Risk-Weighted Assets
Cathay General Bancorp		$	2,521,240				13.54			$	1,303,177				7.00			$	1,210,093				6.50
Cathay Bank			2,574,047				13.84				1,302,198				7.00				1,209,184				6.50
Tier 1 Capital to Risk-Weighted Assets
Cathay General Bancorp			2,521,240				13.54				1,582,429				8.50				1,489,345				8.00
Cathay Bank			2,574,047				13.84				1,581,240				8.50				1,488,226				8.00
Total Capital to Risk-Weighted Assets
Cathay General Bancorp			2,808,181				15.08				1,954,765				10.50				1,861,681				10.00
Cathay Bank			2,745,488				14.76				1,953,297				10.50				1,860,283				10.00
Leverage Ratio
Cathay General Bancorp			2,521,240				10.96				920,018				4.00				1,150,023				5.00
Cathay Bank			2,574,047				11.20				919,148				4.00				1,148,935				5.00

		Actual								Minimum Capital Required - Basel III								Required to be Considered Well Capitalized
		Capital Amount				Ratio				Capital Amount				Ratio				Capital Amount				Ratio
December 31, 2023		(In thousands)
Common Equity Tier 1 to Risk-Weighted Assets
Cathay General Bancorp		$	2,430,773				12.84			$	1,325,277				7.00			$	1,230,615				6.50
Cathay Bank			2,501,439				13.23				1,323,846				7.00				1,229,286				6.50
Tier 1 Capital to Risk-Weighted Assets
Cathay General Bancorp			2,430,773				12.84				1,609,265				8.50				1,514,602				8.00
Cathay Bank			2,501,439				13.23				1,607,527				8.50				1,512,967				8.00
Total Capital to Risk-Weighted Assets
Cathay General Bancorp			2,709,888				14.31				1,987,916				10.50				1,893,253				10.00
Cathay Bank			2,665,054				14.09				1,985,769				10.50				1,891,209				10.00
Leverage Ratio
Cathay General Bancorp			2,430,773				10.55				921,473				4.00				1,151,841				5.00
Cathay Bank			2,501,439				10.87				920,670				4.00				1,150,838				5.00

X

- Definition

Tabular disclosure of the capital amounts and ratios as of the balance sheet date, indicating whether the entity or entities are in compliance with regulatory capital requirements, by entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477270/942-505-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477270/942-505-50-1B

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X

- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
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