Portfolio Loans Receivable - Past Due Financing Receivable (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	$ 1,616,423	$ 1,531,202
Accruing Loans 90 or More Days Past Due	284	82
Non-accrual Loans	7,053	11,339
Residential Real Estate
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	628	6
Loans 30-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	20,059	20,041
Loans 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	6,739	10,925
Total Past Due Loans
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	26,798	30,966
Current Loans
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	1,589,625	1,500,236
Residential | Real estate:
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	430,244	401,607
Accruing Loans 90 or More Days Past Due	0	72
Non-accrual Loans	3,180	2,835
Residential | Real estate: | Loans 30-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	1,424	469
Residential | Real estate: | Loans 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	2,878	2,494
Residential | Real estate: | Total Past Due Loans
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	4,302	2,963
Residential | Real estate: | Current Loans
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	425,942	398,644
Commercial
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	193,262	175,956
Accruing Loans 90 or More Days Past Due	0	0
Non-accrual Loans	871	676
Commercial | Loans 30-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	352	183
Commercial | Loans 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	575	593
Commercial | Total Past Due Loans
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	927	776
Commercial | Current Loans
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	192,335	175,180
Commercial | Real estate:
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	608,646	556,339
Accruing Loans 90 or More Days Past Due	194	0
Non-accrual Loans	961	25
Commercial | Real estate: | Loans 30-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	882	367
Commercial | Real estate: | Loans 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	1,155	25
Commercial | Real estate: | Total Past Due Loans
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	2,037	392
Commercial | Real estate: | Current Loans
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	606,609	555,947
Construction | Real estate:
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	241,249	255,147
Accruing Loans 90 or More Days Past Due	0	0
Non-accrual Loans	2,041	7,803
Construction | Real estate: | Loans 30-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	815	0
Construction | Real estate: | Loans 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	2,041	7,803
Construction | Real estate: | Total Past Due Loans
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	2,856	7,803
Construction | Real estate: | Current Loans
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	238,393	247,344
Consumer | Credit card
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	142,166	141,120
Accruing Loans 90 or More Days Past Due	90	10
Non-accrual Loans	0	0
Consumer | Credit card | Loans 30-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	16,586	19,022
Consumer | Credit card | Loans 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	90	10
Consumer | Credit card | Total Past Due Loans
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	16,676	19,032
Consumer | Credit card | Current Loans
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	125,490	122,088
Consumer | Other consumer
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	856	1,033
Accruing Loans 90 or More Days Past Due	0	0
Non-accrual Loans	0	0
Consumer | Other consumer | Loans 30-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	0	0
Consumer | Other consumer | Loans 90 or More Days Past Due
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	0	0
Consumer | Other consumer | Total Past Due Loans
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	0	0
Consumer | Other consumer | Current Loans
Financing Receivable, Past Due [Line Items]
Loans receivable, gross	$ 856	$ 1,033