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Loans - Summary of Purchased Loans Pools (Details) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2022 USD ($) Segment	Dec. 31, 2021 USD ($) Segment
Accounts Notes And Loans Receivable [Line Items]
Original Balance	$ 230,200	$ 230,200
Current Balance	119,600	128,500
Unamortized Premium/ (Discount)	$ (7,381)	$ (7,820)
Number of Loans | Segment	5,521	6,771
Cumulative net charge-offs	$ 285	$ 269
Residential Mortgage [Member]
Accounts Notes And Loans Receivable [Line Items]
Original Balance	4,300	4,300
Current Balance	4,000	4,100
Unamortized Premium/ (Discount)	$ 248	$ 257
Number of Loans | Segment	50	51
Residential Mortgage [Member] | Minimum [Member]
Accounts Notes And Loans Receivable [Line Items]
Maturity Range	16 years	17 years
Residential Mortgage [Member] | Maximum [Member]
Accounts Notes And Loans Receivable [Line Items]
Maturity Range	23 years	23 years
Secured Consumer Installment Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Original Balance	$ 21,300	$ 21,300
Current Balance	20,500	21,400
Unamortized Premium/ (Discount)	$ (3,403)	$ (3,642)
Number of Loans | Segment	872	900
Secured Consumer Installment Loans [Member] | Minimum [Member]
Accounts Notes And Loans Receivable [Line Items]
Maturity Range	18 years	19 years
Secured Consumer Installment Loans [Member] | Maximum [Member]
Accounts Notes And Loans Receivable [Line Items]
Maturity Range	25 years	25 years
Commercial and Industrial Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Original Balance	$ 6,800	$ 6,800
Current Balance	$ 3,700	$ 3,900
Number of Loans | Segment	26	33
Commercial and Industrial Loans [Member] | Minimum [Member]
Accounts Notes And Loans Receivable [Line Items]
Maturity Range	3 years	4 years
Commercial and Industrial Loans [Member] | Maximum [Member]
Accounts Notes And Loans Receivable [Line Items]
Maturity Range	7 years	8 years
Purchased Commercial Line of Credit 1 [Member]
Accounts Notes And Loans Receivable [Line Items]
Original Balance	$ 11,600	$ 11,600
Current Balance	10,700	7,100
Unamortized Premium/ (Discount)	$ 20	$ 26
Number of Loans | Segment	1	1
Purchased Commercial Line of Credit 1 [Member] | Minimum [Member]
Accounts Notes And Loans Receivable [Line Items]
Maturity Range	0 years	0 years
Purchased Commercial Line of Credit 1 [Member] | Maximum [Member]
Accounts Notes And Loans Receivable [Line Items]
Maturity Range	1 year	1 year
Purchased Commercial Line of Credit 2 [Member]
Accounts Notes And Loans Receivable [Line Items]
Original Balance	$ 10,500	$ 10,500
Current Balance	9,300	9,300
Unamortized Premium/ (Discount)	$ 29	$ 35
Number of Loans | Segment	1	1
Purchased Commercial Line of Credit 2 [Member] | Minimum [Member]
Accounts Notes And Loans Receivable [Line Items]
Maturity Range	0 years	0 years
Purchased Commercial Line of Credit 2 [Member] | Maximum [Member]
Accounts Notes And Loans Receivable [Line Items]
Maturity Range	1 year	1 year
Home Equity Line of Credit [Member]
Accounts Notes And Loans Receivable [Line Items]
Original Balance	$ 21,900	$ 21,900
Current Balance	7,100	8,400
Unamortized Premium/ (Discount)	$ 215	$ 243
Number of Loans | Segment	163	187
Home Equity Line of Credit [Member] | Minimum [Member]
Accounts Notes And Loans Receivable [Line Items]
Maturity Range	1 year	2 years
Home Equity Line of Credit [Member] | Maximum [Member]
Accounts Notes And Loans Receivable [Line Items]
Maturity Range	27 years	28 years
Automobile Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Original Balance	$ 50,400	$ 50,400
Current Balance	6,100	8,800
Unamortized Premium/ (Discount)	$ 198	$ 301
Number of Loans | Segment	684	855
Cumulative net charge-offs	$ 239	$ 239
Automobile Loans [Member] | Minimum [Member]
Accounts Notes And Loans Receivable [Line Items]
Maturity Range	0 years	0 years
Automobile Loans [Member] | Maximum [Member]
Accounts Notes And Loans Receivable [Line Items]
Maturity Range	5 years	5 years
Consumer Loan Pool 1 [Member]
Accounts Notes And Loans Receivable [Line Items]
Original Balance	$ 5,400	$ 5,400
Current Balance	$ 2,400	$ 2,600
Number of Loans | Segment	59	66
Consumer Loan Pool 1 [Member] | Minimum [Member]
Accounts Notes And Loans Receivable [Line Items]
Maturity Range	2 years	3 years
Consumer Loan Pool 1 [Member] | Maximum [Member]
Accounts Notes And Loans Receivable [Line Items]
Maturity Range	4 years	5 years
Consumer Loan Pool 2 [Member]
Accounts Notes And Loans Receivable [Line Items]
Original Balance	$ 26,600	$ 26,600
Current Balance	3,200	6,300
Unamortized Premium/ (Discount)	$ 19	$ 30
Number of Loans | Segment	1,073	1,438
Consumer Loan Pool 2 [Member] | Minimum [Member]
Accounts Notes And Loans Receivable [Line Items]
Maturity Range	0 years	1 year
Consumer Loan Pool 2 [Member] | Maximum [Member]
Accounts Notes And Loans Receivable [Line Items]
Maturity Range	3 years	3 years
Unsecured Consumer Installment Loans Pool 3 [Member]
Accounts Notes And Loans Receivable [Line Items]
Original Balance	$ 10,300	$ 10,300
Current Balance	1,400	2,200
Unamortized Premium/ (Discount)	$ 53	$ 74
Number of Loans | Segment	787	1,356
Cumulative net charge-offs	$ 46	$ 30
Unsecured Consumer Installment Loans Pool 3 [Member] | Minimum [Member]
Accounts Notes And Loans Receivable [Line Items]
Maturity Range	0 years	0 years
Unsecured Consumer Installment Loans Pool 3 [Member] | Maximum [Member]
Accounts Notes And Loans Receivable [Line Items]
Maturity Range	6 years	6 years
Secured Consumer Installment Loans Pool 4 [Member]
Accounts Notes And Loans Receivable [Line Items]
Original Balance	$ 14,500	$ 14,500
Current Balance	11,900	12,600
Unamortized Premium/ (Discount)	$ (1,624)	$ (1,776)
Number of Loans | Segment	539	563
Secured Consumer Installment Loans Pool 4 [Member] | Minimum [Member]
Accounts Notes And Loans Receivable [Line Items]
Maturity Range	23 years	23 years
Secured Consumer Installment Loans Pool 4 [Member] | Maximum [Member]
Accounts Notes And Loans Receivable [Line Items]
Maturity Range	24 years	24 years
Consumer Loan Pool 5 [Member]
Accounts Notes And Loans Receivable [Line Items]
Original Balance	$ 24,400	$ 24,400
Current Balance	18,100	19,700
Unamortized Premium/ (Discount)	$ (530)	$ (583)
Number of Loans | Segment	707	756
Consumer Loan Pool 5 [Member] | Minimum [Member]
Accounts Notes And Loans Receivable [Line Items]
Maturity Range	8 years	8 years
Consumer Loan Pool 5 [Member] | Maximum [Member]
Accounts Notes And Loans Receivable [Line Items]
Maturity Range	23 years	23 years
Consumer Loan Pool 6 [Member]
Accounts Notes And Loans Receivable [Line Items]
Original Balance	$ 22,200	$ 22,200
Current Balance	21,200	22,100
Unamortized Premium/ (Discount)	$ (2,606)	$ (2,785)
Number of Loans | Segment	559	564
Consumer Loan Pool 6 [Member] | Minimum [Member]
Accounts Notes And Loans Receivable [Line Items]
Maturity Range	9 years	9 years
Consumer Loan Pool 6 [Member] | Maximum [Member]
Accounts Notes And Loans Receivable [Line Items]
Maturity Range	24 years	24 years

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