Fair Value Measurement - Fair Value, by Balance Sheet Grouping (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Financial instruments - assets
AFS, at fair value	$ 236,609	$ 237,878
Estimated Fair Value	352,454	348,505
Loans held for sale	2,677	2,475
Derivative assets	10,496
Level 1
Financial instruments - assets
Cash and cash equivalents	62,171	60,881
AFS, at fair value	0	0
Estimated Fair Value	0	0
Equity securities	438	430
Loans held for sale	0	0
Net loans	0	0
Restricted investment in bank stocks	8,041	8,315
Accrued interest receivable	19,205	18,405
Derivative assets	0	0
Financial instruments - liabilities
Deposits	0	0
Short-term debt	0	0
Long-term debt	0	0
Subordinated debt	0	0
Accrued interest payable	5,809	2,303
Derivative liabilities	0	0
Level 2
Financial instruments - assets
Cash and cash equivalents	0	0
AFS, at fair value	236,609	237,878
Estimated Fair Value	352,454	348,505
Equity securities	0	0
Loans held for sale	2,677	2,475
Net loans	0	0
Restricted investment in bank stocks	0	0
Accrued interest receivable	0	0
Derivative assets	10,496	11,743
Financial instruments - liabilities
Deposits	3,867,729	3,761,260
Short-term debt	88,000	102,647
Long-term debt	1,052	1,069
Subordinated debt	56,915	55,917
Accrued interest payable	0	0
Derivative liabilities	10,521	11,737
Level 3
Financial instruments - assets
Cash and cash equivalents	0	0
AFS, at fair value	0	0
Estimated Fair Value	0	0
Equity securities	0	0
Loans held for sale	0	0
Net loans	3,517,331	3,439,948
Restricted investment in bank stocks	0	0
Accrued interest receivable	0	0
Derivative assets	0	0
Financial instruments - liabilities
Deposits	0	0
Short-term debt	0	0
Long-term debt	0	0
Subordinated debt	0	0
Accrued interest payable	0	0
Derivative liabilities	0	0
Carrying Amount
Financial instruments - assets
Cash and cash equivalents	62,171	60,881
AFS, at fair value	236,609	237,878
Estimated Fair Value	396,784	399,494
Equity securities	438	430
Loans held for sale	2,677	2,475
Net loans	3,580,082	3,495,162
Restricted investment in bank stocks	8,041	8,315
Accrued interest receivable	19,205	18,405
Derivative assets	10,496	11,743
Financial instruments - liabilities
Deposits	3,878,081	3,778,331
Short-term debt	88,000	102,647
Long-term debt	1,049	1,119
Subordinated debt	56,794	56,941
Accrued interest payable	5,809	2,303
Derivative liabilities	10,521	11,737
Estimated Fair Value
Financial instruments - assets
Cash and cash equivalents	62,171	60,881
AFS, at fair value	236,609	237,878
Estimated Fair Value	352,454	348,505
Equity securities	438	430
Loans held for sale	2,677	2,475
Net loans	3,517,331	3,439,948
Restricted investment in bank stocks	8,041	8,315
Accrued interest receivable	19,205	18,405
Derivative assets	10,496	11,743
Financial instruments - liabilities
Deposits	3,867,729	3,761,260
Short-term debt	88,000	102,647
Long-term debt	1,052	1,069
Subordinated debt	56,915	55,917
Accrued interest payable	5,809	2,303
Derivative liabilities	$ 10,521	$ 11,737