Securities - Contractual Maturities (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Securities Available-for-Sale, Amortized Cost
Due in one year or less	$ 122,815
Due after one year through five years	127,580
Due after five years through ten years	58,374
Due after ten years	156,872
Debt securities excluding securities not due at a single maturity date	465,641
Total	$ 1,256,285	$ 1,276,981
Securities Available-for-Sale, Weighted Average Yield
Due in one year or less (as a percent)	1.69%
Due after one year through five years (as a percent)	3.63%
Due after five years through ten years (as a percent)	2.77%
Due after ten years (as a percent)	3.11%
Debt securities (as a percent)	2.84%
Total (as a percent)	3.35%
Securities Available-for-Sale, Fair Value
Due in one year or less	$ 120,302
Due after one year through five years	125,243
Due after five years through ten years	53,383
Due after ten years	149,909
Debt securities	448,837
Debt Securities, Available-for-sale, Total	1,173,661	1,192,829
Mortgage-backed and collateralized mortgage obligations
Securities Available-for-Sale, Amortized Cost
Securities not due at a single maturity date	$ 546,113
Securities Available-for-Sale, Weighted Average Yield
Securities not due at a single maturity date, Weighted Average Yield (as a percent)	2.52%
Securities Available-for-Sale, Fair Value
Securities not due at a single maturity date	$ 482,927
Asset-backed Securities
Securities Available-for-Sale, Amortized Cost
Securities not due at a single maturity date	67,634
Total	$ 67,634	71,616
Securities Available-for-Sale, Weighted Average Yield
Securities not due at a single maturity date, Weighted Average Yield (as a percent)	4.08%
Securities Available-for-Sale, Fair Value
Securities not due at a single maturity date	$ 64,877
Debt Securities, Available-for-sale, Total	64,877	68,436
Collateralized loan obligations.
Securities Available-for-Sale, Amortized Cost
Securities not due at a single maturity date	176,897
Total	$ 176,897	173,201
Securities Available-for-Sale, Weighted Average Yield
Securities not due at a single maturity date, Weighted Average Yield (as a percent)	6.98%
Securities Available-for-Sale, Fair Value
Securities not due at a single maturity date	$ 177,020
Debt Securities, Available-for-sale, Total	$ 177,020	$ 171,881