Investments, Amortized Cost, Gross Unrealized Gains and Losses and Fair Value of Investment (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Debt Securities [Abstract]
Amortized cost	$ 442,926	$ 453,343
Gross unrealized gains	253	285
Gross unrealized losses	(38,314)	(36,027)
Allowance for credit losses	0	0
Fair value	404,865	417,601
U.S. Agency Securities [Member]
Debt Securities [Abstract]
Amortized cost	63,572	66,569
Gross unrealized gains	2	1
Gross unrealized losses	(6,173)	(5,799)
Allowance for credit losses	0	0
Fair value	57,401	60,771
U.S. Treasury Securities [Member]
Debt Securities [Abstract]
Amortized cost	143,534	152,485
Gross unrealized gains	0	0
Gross unrealized losses	(9,421)	(9,197)
Allowance for credit losses	0	0
Fair value	134,113	143,288
Obligations of State and Political Subdivisions [Member]
Debt Securities [Abstract]
Amortized cost	106,054	107,945
Gross unrealized gains	12	32
Gross unrealized losses	(6,699)	(6,190)
Allowance for credit losses	0	0
Fair value	99,367	101,787
Corporate Obligations [Member]
Debt Securities [Abstract]
Amortized cost	13,409	13,394
Gross unrealized gains	234	245
Gross unrealized losses	(1,340)	(1,236)
Allowance for credit losses	0	0
Fair value	12,303	12,403
Mortgage-backed Securities in Government Sponsored Entities [Member]
Debt Securities [Abstract]
Amortized cost	116,357	112,950
Gross unrealized gains	5	7
Gross unrealized losses	(14,681)	(13,605)
Allowance for credit losses	0	0
Fair value	$ 101,681	$ 99,352