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Fair Value Measurements - Fair Value of Assets on Recurring Basis Segregated by Level of Valuation Inputs (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Debt investment securities:
Investment securities - available-for-sale	$ 186,985	$ 191,726
Equity investment securities:
Common stock, equity securities	206	206
Other Securities:
Private equity securities	206	206
Mutual funds Common Stock Financial Services Industry [Member]
Equity investment securities:
Common stock, equity securities	206	206
Other Securities:
Private equity securities	206	206
Level 1 [Member] | Total Fair Value [Member]
Other Securities:
Private equity securities	2,126	1,862
Level 2 [Member] | Total Fair Value [Member]
Debt investment securities:
Investment securities - available-for-sale	182,114	186,757
Net Asset Value [Member] | Total Fair Value [Member]
Debt investment securities:
Investment securities - available-for-sale	4,665	4,763
Recurring Basis [Member] | Total Fair Value [Member]
Other Securities:
Interest rate swap derivative fair value hedges	(6,415)
Recurring Basis [Member] | Level 1 [Member]
Other Securities:
Total available-for-sale securities	206	206
Private equity securities	2,126
Recurring Basis [Member] | Level 1 [Member] | Mutual funds Common Stock Financial Services Industry [Member]
Equity investment securities:
Common stock, equity securities	206	206
Recurring Basis [Member] | Level 2 [Member]
Debt investment securities:
US Treasury, agencies and GSEs	41,562	29,364
State and political subdivisions	32,984	45,385
Corporate	6,863	7,066
Asset backed securities	14,838	15,400
Residential mortgage-backed - US agency	16,172	16,400
Collateralized mortgage obligations - US agency	9,260	11,708
Collateralized mortgage obligations - Private label	60,435	61,434
Investment securities - available-for-sale	182,114	186,757
Other Securities:
Total available-for-sale securities	182,114	186,757
Interest rate swap derivative fair value hedges	(6,415)	(9,717)
Interest rate swap derivative cash flow hedges	99	(519)
Recurring Basis [Member] | Level 1, 2 and 3 [Member] | Total Fair Value [Member]
Debt investment securities:
US Treasury, agencies and GSEs	41,562	29,364
State and political subdivisions	32,984	45,385
Corporate	6,863	7,066
Asset backed securities	14,838	15,400
Residential mortgage-backed - US agency	16,172	16,400
Collateralized mortgage obligations - US agency	9,260	11,708
Collateralized mortgage obligations - Private label	60,435	61,434
Investment securities - available-for-sale	182,114	186,757
Other Securities:
Corporate measured at NAV		4,763
Total available-for-sale securities	186,985	191,726
Private equity securities		1,862
Interest rate swap derivative fair value hedges		(9,717)
Interest rate swap derivative cash flow hedges	99	(519)
Recurring Basis [Member] | Level 1, 2 and 3 [Member] | Total Fair Value [Member] | Mutual funds Common Stock Financial Services Industry [Member]
Equity investment securities:
Common stock, equity securities	206	$ 206
Recurring Basis [Member] | Net Asset Value [Member] | Total Fair Value [Member]
Other Securities:
Corporate measured at NAV	$ 4,665

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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