Commitments and Contingent Liabilities - Financial Instruments with Off-Balance Sheet Risk (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Financial instruments with off-balance sheet risk
Contract amount	$ 6,000,000	$ 6,000,000
Commitments to extend credit
Financial instruments with off-balance sheet risk
Contract amount	5,748,816	5,789,600
Standby letters of credit
Financial instruments with off-balance sheet risk
Contract amount	243,209	230,379
Commercial letters of credit
Financial instruments with off-balance sheet risk
Contract amount	$ 3,386	$ 6,460

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 11
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482907/825-10-50-11

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 825
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478898/942-825-50-1

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