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Securities - Fair Value of Debt Security, Available-for-sale and Held-to-maturity (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Debt and Equity Securities, FV-NI [Line Items]
Amortized cost, available for sale	$ 600,835	$ 618,790
Gross unrealized gains, available for sale	0	0
Gross unrealized losses, available for sale	(79,633)	(89,041)
Fair value, available for sale	521,202	529,749
Amortized cost, held to maturity	420,549	425,906
Gross unrealized gains, held to maturity	26	1
Gross unrealized losses, held to maturity	(68,750)	(72,006)
Fair value, held to maturity	351,825	353,901
U.S. Treasury Notes and Bonds [Member]
Debt and Equity Securities, FV-NI [Line Items]
Amortized cost, available for sale	90,579	90,810
Gross unrealized gains, available for sale	0	0
Gross unrealized losses, available for sale	(12,184)	(12,606)
Fair value, available for sale	78,395	78,204
U.S. Government and Federal Agency [Member]
Debt and Equity Securities, FV-NI [Line Items]
Fair value, available for sale	0
Amortized cost, held to maturity	2,969	2,966
Gross unrealized gains, held to maturity	0	0
Gross unrealized losses, held to maturity	(384)	(421)
Fair value, held to maturity	2,585	2,545
State and Municipal [Member]
Debt and Equity Securities, FV-NI [Line Items]
Amortized cost, available for sale	271,940	277,489
Gross unrealized gains, available for sale	0	0
Gross unrealized losses, available for sale	(39,143)	(47,551)
Fair value, available for sale	232,797	229,938
Amortized cost, held to maturity	197,746	201,890
Gross unrealized gains, held to maturity	9	1
Gross unrealized losses, held to maturity	(34,551)	(39,355)
Fair value, held to maturity	163,204	162,536
Mortgage-backed [Member]
Debt and Equity Securities, FV-NI [Line Items]
Amortized cost, available for sale	225,413	236,703
Gross unrealized gains, available for sale	0	0
Gross unrealized losses, available for sale	(27,764)	(28,140)
Fair value, available for sale	197,649	208,563
Amortized cost, held to maturity	199,093	200,473
Gross unrealized gains, held to maturity	0	0
Gross unrealized losses, held to maturity	(30,552)	(29,868)
Fair value, held to maturity	168,541	170,605
Corporate [Member]
Debt and Equity Securities, FV-NI [Line Items]
Amortized cost, available for sale	759	757
Gross unrealized gains, available for sale	0	0
Gross unrealized losses, available for sale	(54)	(46)
Fair value, available for sale	705	711
Amortized cost, held to maturity	19,998	19,603
Gross unrealized gains, held to maturity	17	0
Gross unrealized losses, held to maturity	(3,204)	(2,285)
Fair value, held to maturity	16,811	17,318
Asset-backed Securities [Member]
Debt and Equity Securities, FV-NI [Line Items]
Amortized cost, available for sale	12,144	13,031
Gross unrealized gains, available for sale	0	0
Gross unrealized losses, available for sale	(488)	(698)
Fair value, available for sale	11,656	12,333
Amortized cost, held to maturity	743	974
Gross unrealized gains, held to maturity	0	0
Gross unrealized losses, held to maturity	(59)	(77)
Fair value, held to maturity	$ 684	$ 897

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- 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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