Loans and Allowance for Credit Losses - Loans - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Financing Receivable, Allowance for Credit Losses [Line Items]
Deferred fees and costs	$ 2,900		$ 2,800
Accrued interest	$ 27,500		25,700
Financing Receivable, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Other assets
Interest income on nonaccrual loans	$ 94	$ 127
Foreclosure proceedings in process	160		567
Loans, net of unearned income	5,509,940		$ 4,862,838
Financing receivable, excluding accrued interest, modified period	$ 87	$ 0
Weighted average term increase from modification (in years)	2 years
Financing receivable, excluding accrued interest, modified, after 12 months	$ 0
Mortgage-backed securities
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans, net of unearned income	$ 29,600