Securities, Amortized Cost and Fair Value of Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Available-for-sale, amortized cost [Abstract]
Due in one year or less	$ 40,644
Due after one through five years	287,061
Due after five through ten years	212,371
Due after ten years	184,508
Amortized cost	1,390,747	$ 1,430,605
Available for sale, fair value [Abstract]
Due in one year or less	39,959
Due after one through five years	265,661
Due after five through ten years	187,803
Due after ten years	149,961
Fair value	1,241,080	1,256,226
U.S. Government Sponsored Agency Mortgage-backed Securities [Member]
Available-for-sale, amortized cost [Abstract]
Without single maturity date	575,723
Amortized cost	575,723	593,917
Available for sale, fair value [Abstract]
Without single maturity date	509,085
Fair value	509,085	520,085
Asset-backed Securities [Member]
Available-for-sale, amortized cost [Abstract]
Without single maturity date	90,440
Amortized cost	90,440	91,363
Available for sale, fair value [Abstract]
Without single maturity date	88,611
Fair value	$ 88,611	$ 89,107

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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