Portfolio Loans Receivable - Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	$ 25,252	$ 23,550	$ 25,181	$ 23,434
Provision for Loan Losses	2,035	781	2,987	1,284
Charge-Offs	(880)	(267)	(1,779)	(672)
Recoveries	12	16	30	33
Ending Balance	26,419	24,079	26,419	24,079
Allowance for Loan Losses Ending Balance Evaluated for Impairment: Collectively	26,259		26,259		$ 24,963
Outstanding Loan Balances Evaluated for Impairment: Individually	7,053		7,053		11,339
Outstanding Loan Balances Evaluated for Impairment: Collectively	1,609,370		1,609,370		1,519,863
Residential \| Real estate:
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	5,832	6,816	5,612	7,153
Provision for Loan Losses	31	(107)	251	(444)
Charge-Offs	0	0	0	0
Recoveries	0	0	0	0
Ending Balance	5,863	6,709	5,863	6,709
Allowance for Loan Losses Ending Balance Evaluated for Impairment: Individually	0		0		0
Allowance for Loan Losses Ending Balance Evaluated for Impairment: Collectively	5,863		5,863		5,612
Outstanding Loan Balances Evaluated for Impairment: Individually	3,180		3,180		2,835
Outstanding Loan Balances Evaluated for Impairment: Collectively	427,064		427,064		398,772
Commercial
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	2,350	2,449	2,637	2,417
Provision for Loan Losses	107	176	(180)	313
Charge-Offs	0	(95)	0	(200)
Recoveries	0	5	0	5
Ending Balance	2,457	2,535	2,457	2,535
Allowance for Loan Losses Ending Balance Evaluated for Impairment: Individually	160		160		218
Allowance for Loan Losses Ending Balance Evaluated for Impairment: Collectively	2,297		2,297		2,419
Outstanding Loan Balances Evaluated for Impairment: Individually	871		871		676
Outstanding Loan Balances Evaluated for Impairment: Collectively	192,391		192,391		175,280
Commercial \| Real estate:
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	8,718	7,362	8,566	6,786
Provision for Loan Losses	139	415	291	991
Charge-Offs	0	0	0	0
Recoveries	0	0	0	0
Ending Balance	8,857	7,777	8,857	7,777
Allowance for Loan Losses Ending Balance Evaluated for Impairment: Individually	0		0		0
Allowance for Loan Losses Ending Balance Evaluated for Impairment: Collectively	8,857		8,857		8,566
Outstanding Loan Balances Evaluated for Impairment: Individually	961		961		25
Outstanding Loan Balances Evaluated for Impairment: Collectively	607,685		607,685		556,314
Construction \| Real estate:
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	4,607	4,644	4,699	4,595
Provision for Loan Losses	(134)	(102)	(226)	(53)
Charge-Offs	0	0	0	0
Recoveries	0	1	0	1
Ending Balance	4,473	4,543	4,473	4,543
Allowance for Loan Losses Ending Balance Evaluated for Impairment: Individually	0		0		0
Allowance for Loan Losses Ending Balance Evaluated for Impairment: Collectively	4,473		4,473		4,699
Outstanding Loan Balances Evaluated for Impairment: Individually	2,041		2,041		7,803
Outstanding Loan Balances Evaluated for Impairment: Collectively	239,208		239,208		247,344
Consumer \| Credit card
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	3,735	2,232	3,655	2,462
Provision for Loan Losses	1,892	432	2,853	485
Charge-Offs	(880)	(172)	(1,779)	(472)
Recoveries	12	10	30	27
Ending Balance	4,759	2,502	4,759	2,502
Allowance for Loan Losses Ending Balance Evaluated for Impairment: Individually	0		0		0
Allowance for Loan Losses Ending Balance Evaluated for Impairment: Collectively	4,759		4,759		3,655
Outstanding Loan Balances Evaluated for Impairment: Individually	0		0		0
Outstanding Loan Balances Evaluated for Impairment: Collectively	142,166		142,166		141,120
Consumer \| Other consumer
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	10	47	12	21
Provision for Loan Losses	0	(34)	(2)	(8)
Charge-Offs	0	0	0	0
Recoveries	0	0	0	0
Ending Balance	10	$ 13	10	$ 13
Allowance for Loan Losses Ending Balance Evaluated for Impairment: Individually	0		0		0
Allowance for Loan Losses Ending Balance Evaluated for Impairment: Collectively	10		10		12
Outstanding Loan Balances Evaluated for Impairment: Individually	0		0		0
Outstanding Loan Balances Evaluated for Impairment: Collectively	$ 856		$ 856		$ 1,033

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- Definition

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446

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- Definition

The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524

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- Definition

Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

+ References

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- Definition

The balance of financing receivables that were collectively evaluated for impairment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
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-Paragraph 11B
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- Definition

Amount, excluding accrued interest, of increase in allowance for credit loss on financing receivable from recovery. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-Subparagraph (e)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447

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- Definition

Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-Subparagraph (d)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447

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- Definition

Amount, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447

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- Definition

The balance of financing receivables that were individually evaluated for impairment.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
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