Available for Sale Securities - Amortized Cost and Fair Value of Investment Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Available-for-sale securities:
Amortized cost	$ 510,649	$ 462,519
Gross unrealized gains	283	2,815
Gross unrealized losses	(33,361)	(20,593)
Allowance for credit losses	0	0
Fair value	477,571	444,741
U.S. Agency Securities [Member]
Available-for-sale securities:
Amortized cost	50,640	52,651
Gross unrealized gains	10	12
Gross unrealized losses	(3,646)	(2,908)
Allowance for credit losses	0	0
Fair value	47,004	49,755
U.S. Treasury Securities [Member]
Available-for-sale securities:
Amortized cost	59,248	84,551
Gross unrealized gains	0	225
Gross unrealized losses	(1,789)	(2,122)
Allowance for credit losses	0	0
Fair value	57,459	82,654
Obligations of State and Political Subdivisions [Member]
Available-for-sale securities:
Amortized cost	137,776	120,608
Gross unrealized gains	46	1,070
Gross unrealized losses	(11,729)	(5,792)
Allowance for credit losses	0	0
Fair value	126,093	115,886
Corporate Obligations [Member]
Available-for-sale securities:
Amortized cost	4,830	11,304
Gross unrealized gains	191	405
Gross unrealized losses	(130)	(412)
Allowance for credit losses	0	0
Fair value	4,891	11,297
Mortgage-backed Securities in Government Sponsored Entities [Member]
Available-for-sale securities:
Amortized cost	258,155	193,405
Gross unrealized gains	36	1,103
Gross unrealized losses	(16,067)	(9,359)
Allowance for credit losses	0	0
Fair value	$ 242,124	$ 185,149

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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