Investment Securities - Amortized Cost and Fair Values of Investment Securities Available for Sale (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Available for sale (AFS):
Amortized Cost	$ 198,447
Fair value	184,667	$ 193,673
Investment equity securities:
Fair value	1,072	1,142
Total debt securities
Available for sale (AFS):
Amortized Cost	198,447	206,102
Gross unrealized gains	0	215
Gross unrealized losses	(13,780)	(12,644)
Fair value	184,667	193,673
U.S. Government and agency securities
Available for sale (AFS):
Amortized Cost	4,001	3,002
Gross unrealized gains	0	0
Gross unrealized losses	(137)	(106)
Fair value	3,864	2,896
Mortgage-backed securities
Available for sale (AFS):
Amortized Cost	12,101	1,496
Gross unrealized gains	0	0
Gross unrealized losses	(705)	(214)
Fair value	11,396	1,282
State and political securities
Available for sale (AFS):
Amortized Cost	129,024	151,426
Gross unrealized gains	0	157
Gross unrealized losses	(9,177)	(8,774)
Fair value	119,847	142,809
Other debt securities
Available for sale (AFS):
Amortized Cost	53,321	50,178
Gross unrealized gains	0	58
Gross unrealized losses	(3,761)	(3,550)
Fair value	49,560	46,686
Equity securities
Investment equity securities:
Amortized Cost	1,300	1,350
Gross unrealized gains	0	0
Gross unrealized losses	(228)	(208)
Fair value	$ 1,072	$ 1,142

Equity Securities, FV-NI, Accumulated Unrealized Gain

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Equity Securities, FV-NI, Accumulated Unrealized Loss

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Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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