Loans and Leases Held for Investment, Net of Allowance For Loan and Lease Losses - Credit Quality Indicators (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Term Loans and Leases by Origination Year
Total	$ 2,899,126	$ 0
Consumer Portfolio Segment
Term Loans and Leases by Origination Year
2021	1,904,265
2020	37,620
2019	26,798
2018	9,906
2017	3,407
Prior	38,645
Within Revolving Period	1,275
Total	2,021,916
Consumer Portfolio Segment | Unsecured personal
Term Loans and Leases by Origination Year
2021	1,804,578
2020	0
2019	0
2018	0
2017	0
Prior	0
Within Revolving Period	0
Total	1,804,578
Consumer Portfolio Segment | Residential mortgages
Term Loans and Leases by Origination Year
2021	36,732
2020	37,620
2019	26,798
2018	7,277
2017	3,025
Prior	38,645
Within Revolving Period	1,265
Total	151,362
Consumer Portfolio Segment | Secured consumer
Term Loans and Leases by Origination Year
2021	62,955
2020	0
2019	0
2018	2,629
2017	382
Prior	0
Within Revolving Period	10
Total	65,976
Commercial Portfolio Segment
Term Loans and Leases by Origination Year
2021	350,952
2020	208,693
2019	110,640
2018	70,150
2017	47,320
Prior	88,769
Within Revolving Period	686
Total	877,210
Commercial Portfolio Segment | Equipment finance
Term Loans and Leases by Origination Year
2021	53,971
2020	35,398
2019	28,728
2018	16,060
2017	6,184
Prior	8,814
Within Revolving Period	0
Total	149,155
Commercial Portfolio Segment | Equipment finance | Pass
Term Loans and Leases by Origination Year
2021	52,440
2020	35,398
2019	26,918
2018	15,457
2017	6,184
Prior	8,814
Within Revolving Period	0
Total	145,211
Commercial Portfolio Segment | Equipment finance | Special mention
Term Loans and Leases by Origination Year
2021	1,531
2020	0
2019	1,810
2018	0
2017	0
Prior	0
Within Revolving Period	0
Total	3,341
Commercial Portfolio Segment | Equipment finance | Substandard
Term Loans and Leases by Origination Year
2021	0
2020	0
2019	0
2018	603
2017	0
Prior	0
Within Revolving Period	0
Total	603
Commercial Portfolio Segment | Equipment finance | Doubtful
Term Loans and Leases by Origination Year
2021	0
2020	0
2019	0
2018	0
2017	0
Prior	0
Within Revolving Period	0
Total	0
Commercial Portfolio Segment | Equipment finance | Loss
Term Loans and Leases by Origination Year
2021	0
2020	0
2019	0
2018	0
2017	0
Prior	0
Within Revolving Period	0
Total	0
Commercial Portfolio Segment | Commercial real estate
Term Loans and Leases by Origination Year
2021	55,613
2020	63,599
2019	54,737
2018	43,843
2017	23,384
Prior	69,223
Within Revolving Period	0
Total	310,399
Commercial Portfolio Segment | Commercial real estate | Pass
Term Loans and Leases by Origination Year
2021	55,613
2020	55,202
2019	54,460
2018	39,981
2017	22,366
Prior	57,235
Within Revolving Period	0
Total	284,857
Commercial Portfolio Segment | Commercial real estate | Special mention
Term Loans and Leases by Origination Year
2021	0
2020	8,397
2019	0
2018	1,366
2017	1,018
Prior	7,242
Within Revolving Period	0
Total	18,023
Commercial Portfolio Segment | Commercial real estate | Substandard
Term Loans and Leases by Origination Year
2021	0
2020	0
2019	277
2018	2,496
2017	0
Prior	4,179
Within Revolving Period	0
Total	6,952
Commercial Portfolio Segment | Commercial real estate | Doubtful
Term Loans and Leases by Origination Year
2021	0
2020	0
2019	0
2018	0
2017	0
Prior	0
Within Revolving Period	0
Total	0
Commercial Portfolio Segment | Commercial real estate | Loss
Term Loans and Leases by Origination Year
2021	0
2020	0
2019	0
2018	0
2017	0
Prior	567
Within Revolving Period	0
Total	567
Commercial Portfolio Segment | Commercial and industrial
Term Loans and Leases by Origination Year
2021	241,368
2020	109,696
2019	27,175
2018	10,247
2017	17,752
Prior	10,732
Within Revolving Period	686
Total	417,656
Commercial Portfolio Segment | Commercial and industrial | Pass
Term Loans and Leases by Origination Year
2021	241,368
2020	108,574
2019	24,106
2018	7,874
2017	14,756
Prior	8,058
Within Revolving Period	599
Total	405,335
Commercial Portfolio Segment | Commercial and industrial | Special mention
Term Loans and Leases by Origination Year
2021	0
2020	0
2019	2,207
2018	463
2017	1,467
Prior	40
Within Revolving Period	0
Total	4,177
Commercial Portfolio Segment | Commercial and industrial | Substandard
Term Loans and Leases by Origination Year
2021	0
2020	1,122
2019	862
2018	1,858
2017	1,525
Prior	1,571
Within Revolving Period	87
Total	7,025
Commercial Portfolio Segment | Commercial and industrial | Doubtful
Term Loans and Leases by Origination Year
2021	0
2020	0
2019	0
2018	0
2017	0
Prior	0
Within Revolving Period	0
Total	0
Commercial Portfolio Segment | Commercial and industrial | Loss
Term Loans and Leases by Origination Year
2021	0
2020	0
2019	0
2018	52
2017	4
Prior	1,063
Within Revolving Period	0
Total	1,119
Current | Consumer Portfolio Segment | Unsecured personal
Term Loans and Leases by Origination Year
2021	1,796,678
2020	0
2019	0
2018	0
2017	0
Prior	0
Within Revolving Period	0
Total	1,796,678
Current | Consumer Portfolio Segment | Residential mortgages
Term Loans and Leases by Origination Year
2021	36,732
2020	37,620
2019	26,798
2018	7,277
2017	2,682
Prior	37,685
Within Revolving Period	1,265
Total	150,059
Current | Consumer Portfolio Segment | Secured consumer
Term Loans and Leases by Origination Year
2021	62,731
2020	0
2019	0
2018	0
2017	0
Prior	0
Within Revolving Period	10
Total	62,741
30-59 days past due | Consumer Portfolio Segment | Unsecured personal
Term Loans and Leases by Origination Year
2021	3,624
2020	0
2019	0
2018	0
2017	0
Prior	0
Within Revolving Period	0
Total	3,624
30-59 days past due | Consumer Portfolio Segment | Residential mortgages
Term Loans and Leases by Origination Year
2021	0
2020	0
2019	0
2018	0
2017	0
Prior	142
Within Revolving Period	0
Total	142
30-59 days past due | Consumer Portfolio Segment | Secured consumer
Term Loans and Leases by Origination Year
2021	171
2020	0
2019	0
2018	0
2017	0
Prior	0
Within Revolving Period	0
Total	171
30-59 days past due | Commercial Portfolio Segment
Term Loans and Leases by Origination Year
Total	104
30-59 days past due | Commercial Portfolio Segment | Equipment finance
Term Loans and Leases by Origination Year
Total	0
30-59 days past due | Commercial Portfolio Segment | Commercial real estate
Term Loans and Leases by Origination Year
Total	104
30-59 days past due | Commercial Portfolio Segment | Commercial and industrial
Term Loans and Leases by Origination Year
Total	0
60-89 days past due | Consumer Portfolio Segment | Unsecured personal
Term Loans and Leases by Origination Year
2021	2,600
2020	0
2019	0
2018	0
2017	0
Prior	0
Within Revolving Period	0
Total	2,600
60-89 days past due | Consumer Portfolio Segment | Residential mortgages
Term Loans and Leases by Origination Year
2021	0
2020	0
2019	0
2018	0
2017	92
Prior	0
Within Revolving Period	0
Total	92
60-89 days past due | Consumer Portfolio Segment | Secured consumer
Term Loans and Leases by Origination Year
2021	53
2020	0
2019	0
2018	0
2017	0
Prior	0
Within Revolving Period	0
Total	53
60-89 days past due | Commercial Portfolio Segment
Term Loans and Leases by Origination Year
Total	0
60-89 days past due | Commercial Portfolio Segment | Equipment finance
Term Loans and Leases by Origination Year
Total	0
60-89 days past due | Commercial Portfolio Segment | Commercial real estate
Term Loans and Leases by Origination Year
Total	0
60-89 days past due | Commercial Portfolio Segment | Commercial and industrial
Term Loans and Leases by Origination Year
Total	0
90 or more days past due | Consumer Portfolio Segment | Unsecured personal
Term Loans and Leases by Origination Year
2021	1,676
2020	0
2019	0
2018	0
2017	0
Prior	0
Within Revolving Period	0
Total	1,676
90 or more days past due | Consumer Portfolio Segment | Residential mortgages
Term Loans and Leases by Origination Year
2021	0
2020	0
2019	0
2018	0
2017	251
Prior	818
Within Revolving Period	0
Total	1,069
90 or more days past due | Consumer Portfolio Segment | Secured consumer
Term Loans and Leases by Origination Year
2021	0
2020	0
2019	0
2018	2,629
2017	382
Prior	0
Within Revolving Period	0
Total	3,011
90 or more days past due | Commercial Portfolio Segment
Term Loans and Leases by Origination Year
Total	2,019
90 or more days past due | Commercial Portfolio Segment | Equipment finance
Term Loans and Leases by Origination Year
Total	0
90 or more days past due | Commercial Portfolio Segment | Commercial real estate
Term Loans and Leases by Origination Year
Total	609
90 or more days past due | Commercial Portfolio Segment | Commercial and industrial
Term Loans and Leases by Origination Year
Total	1,410
Total Days Past Due | Commercial Portfolio Segment
Term Loans and Leases by Origination Year
Total	2,123
Total Days Past Due | Commercial Portfolio Segment | Equipment finance
Term Loans and Leases by Origination Year
Total	0
Total Days Past Due | Commercial Portfolio Segment | Commercial real estate
Term Loans and Leases by Origination Year
Total	713
Total Days Past Due | Commercial Portfolio Segment | Commercial and industrial
Term Loans and Leases by Origination Year
Total	$ 1,410