Loans Receivable and Allowance for Credit Losses - Schedule Of Loans Modification (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Financing Receivable, Modified [Line Items]
Financing receivable, modified, subsequent default	$ 45,112	$ 26,654	$ 1,016
Term Extension
Financing Receivable, Modified [Line Items]
Financing receivable, modified, subsequent default	30,197	3,684	0
Payment Delay
Financing Receivable, Modified [Line Items]
Financing receivable, modified, subsequent default	12,648	19,850	1,016
Rate Reduction/ Payment Delay
Financing Receivable, Modified [Line Items]
Financing receivable, modified, subsequent default	746	658	0
Term Extension/ Payment Delay
Financing Receivable, Modified [Line Items]
Financing receivable, modified, subsequent default	1,521	2,462	0
Commercial Lending
Financing Receivable, Modified [Line Items]
Financing receivable, modified, subsequent default	35,270	8,621
Commercial Lending \| Term Extension
Financing Receivable, Modified [Line Items]
Financing receivable, modified, subsequent default	30,197	3,684
Commercial Lending \| Payment Delay
Financing Receivable, Modified [Line Items]
Financing receivable, modified, subsequent default	5,073	4,937
Commercial Lending \| Rate Reduction/ Payment Delay
Financing Receivable, Modified [Line Items]
Financing receivable, modified, subsequent default	0	0
Commercial Lending \| Term Extension/ Payment Delay
Financing Receivable, Modified [Line Items]
Financing receivable, modified, subsequent default	0	0
Commercial Lending \| C&I
Financing Receivable, Modified [Line Items]
Financing receivable, modified, subsequent default	5,279	8,621
Commercial Lending \| C&I \| Term Extension
Financing Receivable, Modified [Line Items]
Financing receivable, modified, subsequent default	206	3,684
Commercial Lending \| C&I \| Payment Delay
Financing Receivable, Modified [Line Items]
Financing receivable, modified, subsequent default	5,073	4,937
Commercial Lending \| C&I \| Rate Reduction/ Payment Delay
Financing Receivable, Modified [Line Items]
Financing receivable, modified, subsequent default	0	0
Commercial Lending \| C&I \| Term Extension/ Payment Delay
Financing Receivable, Modified [Line Items]
Financing receivable, modified, subsequent default	0	0
Commercial Lending \| CRE
Financing Receivable, Modified [Line Items]
Financing receivable, modified, subsequent default	29,991
Commercial Lending \| CRE \| Term Extension
Financing Receivable, Modified [Line Items]
Financing receivable, modified, subsequent default	29,991
Commercial Lending \| CRE \| Payment Delay
Financing Receivable, Modified [Line Items]
Financing receivable, modified, subsequent default	0
Commercial Lending \| CRE \| Rate Reduction/ Payment Delay
Financing Receivable, Modified [Line Items]
Financing receivable, modified, subsequent default	0
Commercial Lending \| CRE \| Term Extension/ Payment Delay
Financing Receivable, Modified [Line Items]
Financing receivable, modified, subsequent default	0
Consumer Lending
Financing Receivable, Modified [Line Items]
Financing receivable, modified, subsequent default	9,842	18,033	1,016
Consumer Lending \| Term Extension
Financing Receivable, Modified [Line Items]
Financing receivable, modified, subsequent default	0	0	0
Consumer Lending \| Payment Delay
Financing Receivable, Modified [Line Items]
Financing receivable, modified, subsequent default	7,575	14,913	1,016
Consumer Lending \| Rate Reduction/ Payment Delay
Financing Receivable, Modified [Line Items]
Financing receivable, modified, subsequent default	746	658	0
Consumer Lending \| Term Extension/ Payment Delay
Financing Receivable, Modified [Line Items]
Financing receivable, modified, subsequent default	1,521	2,462	0
Consumer Lending \| Single-family residential
Financing Receivable, Modified [Line Items]
Financing receivable, modified, subsequent default	4,744	12,826	267
Consumer Lending \| Single-family residential \| Term Extension
Financing Receivable, Modified [Line Items]
Financing receivable, modified, subsequent default	0	0	0
Consumer Lending \| Single-family residential \| Payment Delay
Financing Receivable, Modified [Line Items]
Financing receivable, modified, subsequent default	3,706	10,223	267
Consumer Lending \| Single-family residential \| Rate Reduction/ Payment Delay
Financing Receivable, Modified [Line Items]
Financing receivable, modified, subsequent default	0	141	0
Consumer Lending \| Single-family residential \| Term Extension/ Payment Delay
Financing Receivable, Modified [Line Items]
Financing receivable, modified, subsequent default	1,038	2,462	0
Consumer Lending \| HELOCs
Financing Receivable, Modified [Line Items]
Financing receivable, modified, subsequent default	5,098	5,207	749
Consumer Lending \| HELOCs \| Term Extension
Financing Receivable, Modified [Line Items]
Financing receivable, modified, subsequent default	0	0	0
Consumer Lending \| HELOCs \| Payment Delay
Financing Receivable, Modified [Line Items]
Financing receivable, modified, subsequent default	3,869	4,690	749
Consumer Lending \| HELOCs \| Rate Reduction/ Payment Delay
Financing Receivable, Modified [Line Items]
Financing receivable, modified, subsequent default	746	517	0
Consumer Lending \| HELOCs \| Term Extension/ Payment Delay
Financing Receivable, Modified [Line Items]
Financing receivable, modified, subsequent default	$ 483	$ 0	$ 0

EAST WEST BANCORP INC 10-K