Acquisition (Narrative) (Details) $ / shares in Units, shares in Thousands, $ in Thousands			3 Months Ended
	Jan. 01, 2026 USD ($) $ / shares shares	Jun. 16, 2025	Mar. 31, 2026 USD ($)	Mar. 31, 2025 USD ($)	Dec. 31, 2025 USD ($)
Business Combination [Line Items]
Goodwill			$ 253,805		$ 146,539
FineMark Holdings, Inc.
Business Combination [Line Items]
Business Combination, Effective Date of Acquisition	Jan. 01, 2026
Business Combination, Name of Acquiree	FineMark Holdings, Inc.
Business Combination, Date of Acquisition Agreement		Jun. 16, 2025
Business Combination, Consideration Transferred, Equity Interest	$ 519,900
Business Combination, Consideration Transferred, Equity Interest, Share Issued, Number of Shares | shares	9,900
Business Combination, Price Per Share | $ / shares	$ 52.34
Business Combination, Achieved in Stages, Preacquisition Equity Interest in Acquiree, Fair Value	$ 4,614		$ 4,614	$ 0
Business Combination, Consideration Transferred	$ 524,487
Business Combination Acquisition Exchange Ratio on Common Stock	0.7245
Business Combination Acquisition Exchange Ratio on Preferred Stock	36.3636
Goodwill	$ 107,266
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Repayment and Penalties	351,500
Business Combination, Transaction Cost, Excluding Separately Recognized Transaction	$ 14,000