Investments - Estimated Fair Value of Contractual Maturities - Available-for-Sale Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Amortized Cost [Abstract]
Maturing within one year, Amortized Cost	$ 3,008
Maturing within one year, Amortized Cost	0	$ 3,513
Maturing after one year through five years, Amortized Cost	8,376	26,422
Maturing after five years through ten years, Amortized Cost	71,878	36,840
Maturing after ten years, Amortized Cost	251,829	253,936
Amortized Cost	924,538
Amortized Cost (before ASU 2016-13)		957,459
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Fair Value [Abstract]
Maturing within one year, Fair Value	3,014
Maturing within one year, Fair Value	0	3,547
Maturing after one year through five years, Fair Value	8,267	26,718
Maturing after five years through ten years, Fair Value	68,281	38,314
Maturing after ten years, Fair Value	220,579	265,792
Fair Value	864,178
Investment securities available for sale (before ASU 2016-13)		973,314
Mortgage-Backed Securities [Member]
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Amortized Cost [Abstract]
Securities not due at a single maturity date, Amortized Cost	192,684	303,912
Amortized Cost	190,417
Amortized Cost (before ASU 2016-13)		303,912
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Fair Value [Abstract]
Securities not due at a single maturity date, Fair Value	183,713	306,727
Fair Value	181,446
Investment securities available for sale (before ASU 2016-13)		306,727
Collateralized Loan Obligations [Member]
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Amortized Cost [Abstract]
Securities not due at a single maturity date, Amortized Cost	396,763	332,836
Amortized Cost	396,763
Amortized Cost (before ASU 2016-13)		332,836
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Fair Value [Abstract]
Securities not due at a single maturity date, Fair Value	380,324	332,216
Fair Value	$ 380,324
Investment securities available for sale (before ASU 2016-13)		$ 332,216