Securities Available for Sale - Maturities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Amortized Cost [Abstract]
Amortized cost, due after 5 years through 10 years	$ 8,631
Amortized cost, due after 10 years	200,314
Asset-backed securities related to Structured Program transactions	47,225
Amortized Cost	256,170	$ 159,164
Fair Value
Fair value, due after 5 years through 10 years	8,516
Fair value, due after 10 years	196,838
Asset-backed securities related to Structured Program transactions	58,176
Fair Value	$ 263,530	142,226
Weighted-average yield, due after 5 years through 10 years	1.59%
Weighted-average yield, due after 10 years	1.57%
Weighted-average yield	4.76%
U.S. agency residential mortgage-backed securities
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Amortized Cost [Abstract]
Amortized cost, due after 5 years through 10 years	$ 710
Amortized cost, due after 10 years	125,275
Fair Value
Fair value, due after 5 years through 10 years	703
Fair value, due after 10 years	122,996
Fair Value	123,699
Other asset-backed securities
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Amortized Cost [Abstract]
Amortized cost, due after 5 years through 10 years	1,092
Amortized cost, due after 10 years	25,020
Amortized Cost	26,112
Fair Value
Fair value, due after 5 years through 10 years	1,109
Fair value, due after 10 years	25,024
Fair Value	26,133	$ 200
Commercial mortgage-backed securities
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Amortized Cost [Abstract]
Amortized cost, due after 5 years through 10 years	4,204
Amortized cost, due after 10 years	22,445
Amortized Cost	26,649
Fair Value
Fair value, due after 5 years through 10 years	4,092
Fair value, due after 10 years	22,006
Fair Value	26,098
U.S. agency securities
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Amortized Cost [Abstract]
Amortized cost, due after 5 years through 10 years	1,998
Amortized cost, due after 10 years	24,904
Amortized Cost	26,902
Fair Value
Fair value, due after 5 years through 10 years	1,992
Fair value, due after 10 years	24,180
Fair Value	26,172
Municipal securities
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Amortized Cost [Abstract]
Amortized cost, due after 5 years through 10 years	627
Amortized cost, due after 10 years	2,670
Amortized Cost	3,297
Fair Value
Fair value, due after 5 years through 10 years	620
Fair value, due after 10 years	2,632
Fair Value	$ 3,252
Asset-backed securities related to Structured Program transactions
Fair Value
Weighted-average yield	18.89%

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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