Investment Securities - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Securities Financing Transactions Disclosures [Abstract]
AFS, at fair value (amortized cost $278,158 and $284,770, respectively)	$ 258,493		$ 260,477
AFS accrued interest	$ 1,100
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Accrued interest receivable
Held-to-maturity securities	$ 375,115		382,447
HTM accrued interest	$ 2,200
Debt Securities, Held-to-Maturity, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Accrued interest receivable
Available-for-sale securities pledged as collateral	$ 429,400		440,000
Letter of credit outstanding, amount	113,000		$ 156,000
Net gains	$ 0	$ 0