Securities Available for Sale - Maturities (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Amortized Cost
Amortized cost, due after 1 year through 5 years	$ 10,042
Amortized Cost, due after 5 years through 10 years	23,596
Amortized Cost, due after 10 years	367,695
Asset-backed securities related to Structured Program transactions	14,393
Amortized Cost	415,726	$ 256,170
Fair Value
Fair value, due after 1 year through 5 years	9,559
Fair Value, due after 5 years through 10 years	20,919
Fair Value, due after 10 years	306,233
Asset-backed securities related to Structured Program transactions	22,446
Fair Value	$ 359,157	263,530
Weighted-average Yield, due after1 year through 5 years	3.33%
Weighted-average Yield, due after 5 years through 10 years	2.63%
Weighted- average Yield, due after 10 years	2.44%
Weighted- average Yield	4.33%
U.S. agency residential mortgage-backed securities
Amortized Cost
Amortized Cost, due after 5 years through 10 years	$ 6,604
Amortized Cost, due after 10 years	253,682
Fair Value
Fair Value, due after 5 years through 10 years	6,093
Fair Value, due after 10 years	210,617
Fair Value	216,710	123,699
U.S. agency securities
Amortized Cost
Amortized cost, due after 1 year through 5 years	9,000
Amortized Cost, due after 5 years through 10 years	12,847
Amortized Cost, due after 10 years	68,598
Amortized Cost	90,445	26,902
Fair Value
Fair value, due after 1 year through 5 years	8,640
Fair Value, due after 5 years through 10 years	11,287
Fair Value, due after 10 years	55,458
Fair Value	75,385	26,172
Commercial mortgage-backed securities
Amortized Cost
Amortized cost, due after 1 year through 5 years	1,042
Amortized Cost, due after 5 years through 10 years	2,871
Amortized Cost, due after 10 years	24,094
Amortized Cost	28,007	26,649
Fair Value
Fair value, due after 1 year through 5 years	919
Fair Value, due after 5 years through 10 years	2,367
Fair Value, due after 10 years	20,446
Fair Value	23,732	26,098
Other asset-backed securities
Amortized Cost
Amortized Cost, due after 5 years through 10 years	649
Amortized Cost, due after 10 years	18,664
Amortized Cost	19,313	26,112
Fair Value
Fair Value, due after 5 years through 10 years	656
Fair Value, due after 10 years	17,877
Fair Value	18,533	26,133
Municipal securities
Amortized Cost
Amortized Cost, due after 5 years through 10 years	625
Amortized Cost, due after 10 years	2,657
Amortized Cost	3,282	3,297
Fair Value
Fair Value, due after 5 years through 10 years	516
Fair Value, due after 10 years	1,835
Fair Value	$ 2,351	$ 3,252
Asset-backed securities related to Structured Program transactions
Fair Value
Weighted- average Yield	56.16%