Acquisition (Details) - USD ($) $ in Thousands		3 Months Ended
	Jan. 01, 2026	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Business Combination [Line Items]
Goodwill		$ 253,805		$ 146,539
FineMark Holdings, Inc.
Business Combination [Line Items]
Business Combination, Consideration Transferred, Equity Interest	$ 519,900
Business Combination, Achieved in Stages, Preacquisition Equity Interest in Acquiree, Fair Value	4,614	$ 4,614	$ 0
Payments to Acquire Businesses, Gross	8
Business Combination, Consideration Transferred	524,487
Business Combinations, Recognized Asset Acquired, Loans, Net of Allowance for Credit Losses on Loans	2,607,866
Business Combinations, Recognized Asset Acquired, Trading Securities	541,967
Business Combinations, Recognized Asset Acquired, Other Investments	27,180
Business Combinations, Recognized Asset Acquired, Interest Earning Deposits with Banks	483,821
Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent	17,547
Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment	47,074
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill	138,082
Business Combinations, Recognized Asset Acquired, Other Assets	102,979
Business Combination, Recognized Asset Acquired, Asset	3,966,516
Business Combination, Recognized Liability Assumed, Non-Interest bearing deposits	425,140
Business Combination, Recognized Liability Assumed, Interest bearing deposits	2,684,381
Business Combination, Recognized Liability Assumed, Repurchase Agreements	63,018
Business Combination, Recognized Liability Assumed, Other Borrowings	351,458
Business Combination, Recognized Liability Assumed, Other Liabilities	25,298
Business Combination, Recognized Liability Assumed, Liability	3,549,295
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less)	417,221
Goodwill	107,266
FineMark Holdings, Inc. | Common Stock [Member]
Business Combination [Line Items]
Business Combination, Consideration Transferred, Equity Interest	$ 519,865