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Investment Securities - Summary of Amortized Cost and Estimated Fair Value, AFS (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021	Sep. 30, 2021
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 343,599	$ 322,741	$ 310,018
Unrealized Gains	4	2,954	3,722
Unrealized Losses	(60,335)	(5,129)	(4,516)
Fair Value (Estimated)	283,268	320,566	309,224
U.S. Government-sponsored agencies
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	26,023	23,045	23,045
Unrealized Gains	0	0	0
Unrealized Losses	(6,879)	(1,146)	(1,106)
Fair Value (Estimated)	19,144	21,899	21,939
Mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	273,215	256,992	247,606
Unrealized Gains	4	1,803	2,751
Unrealized Losses	(44,041)	(3,895)	(3,104)
Fair Value (Estimated)	229,178	254,900	247,253
State and political subdivisions
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	40,489	38,127	34,590
Unrealized Gains	0	1,083	895
Unrealized Losses	(9,383)	(88)	(306)
Fair Value (Estimated)	31,106	39,122	35,179
Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	3,872	4,577	4,777
Unrealized Gains	0	68	76
Unrealized Losses	(32)	0	0
Fair Value (Estimated)	$ 3,840	$ 4,645	$ 4,853

X

- Definition

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).

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
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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).

+ References

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Amortized cost excluding accrued interest, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
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Amount excluding accrued interest, 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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