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Securities - Fair Value of Debt Security, Available-for-sale and Held-to-maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Debt and Equity Securities, FV-NI [Line Items]
Amortized cost, available for sale	$ 572,125	$ 584,239
Gross unrealized gains, available for sale	29	14
Gross unrealized losses, available for sale	(67,518)	(69,655)
Fair value, available for sale	504,636	514,598
Amortized cost, held to maturity	397,981	407,959
Gross unrealized gains, held to maturity	29	35
Gross unrealized losses, held to maturity	(58,800)	(59,203)
Fair value, held to maturity	339,210	348,791
U.S. Treasury Notes and Bonds [Member]
Debt and Equity Securities, FV-NI [Line Items]
Amortized cost, available for sale	90,229	90,345
Gross unrealized gains, available for sale	0	0
Gross unrealized losses, available for sale	(10,953)	(10,151)
Fair value, available for sale	79,276	80,194
U.S. Government and Federal Agency [Member]
Debt and Equity Securities, FV-NI [Line Items]
Amortized cost, held to maturity	2,974	2,972
Gross unrealized gains, held to maturity	0	0
Gross unrealized losses, held to maturity	(322)	(293)
Fair value, held to maturity	2,652	2,679
State and Municipal [Member]
Debt and Equity Securities, FV-NI [Line Items]
Amortized cost, available for sale	263,439	269,918
Gross unrealized gains, available for sale	0	0
Gross unrealized losses, available for sale	(32,511)	(35,236)
Fair value, available for sale	230,928	234,682
Amortized cost, held to maturity	195,710	196,098
Gross unrealized gains, held to maturity	9	14
Gross unrealized losses, held to maturity	(31,086)	(30,220)
Fair value, held to maturity	164,633	165,892
Mortgage-backed [Member]
Debt and Equity Securities, FV-NI [Line Items]
Amortized cost, available for sale	207,478	212,392
Gross unrealized gains, available for sale	29	14
Gross unrealized losses, available for sale	(23,757)	(23,905)
Fair value, available for sale	183,750	188,501
Amortized cost, held to maturity	178,818	188,329
Gross unrealized gains, held to maturity	0	0
Gross unrealized losses, held to maturity	(24,692)	(25,796)
Fair value, held to maturity	154,126	162,533
Corporate [Member]
Debt and Equity Securities, FV-NI [Line Items]
Amortized cost, available for sale	250	250
Gross unrealized gains, available for sale	0	0
Gross unrealized losses, available for sale	(46)	(46)
Fair value, available for sale	204	204
Amortized cost, held to maturity	20,021	20,013
Gross unrealized gains, held to maturity	20	21
Gross unrealized losses, held to maturity	(2,679)	(2,864)
Fair value, held to maturity	17,362	17,170
Asset-backed Securities [Member]
Debt and Equity Securities, FV-NI [Line Items]
Amortized cost, available for sale	10,729	11,334
Gross unrealized gains, available for sale	0	0
Gross unrealized losses, available for sale	(251)	(317)
Fair value, available for sale	10,478	11,017
Amortized cost, held to maturity	458	547
Gross unrealized gains, held to maturity	0	0
Gross unrealized losses, held to maturity	(21)	(30)
Fair value, held to maturity	$ 437	$ 517

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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