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Fair Value (Details) - USD ($)	Mar. 31, 2024	Dec. 31, 2023
Mortgage-backed securities
Estimated Fair Value	$ 237,116,000	$ 273,838,000
Mutual funds held in deferred compensation trust
Mutual Funds Held In Deferred Compensation Trust		1,327,000
Level 2 | Mortgage-backed securities
Estimated Fair Value	237,116,000	273,838,000
Level 2 | Mutual funds held in deferred compensation trust
Mutual Funds Held In Deferred Compensation Trust		1,327,000
Level 3 | Mortgage-backed securities
Estimated Fair Value	0
Level 3 | Mutual funds held in deferred compensation trust
Mutual Funds Held In Deferred Compensation Trust		0
Level 1 | Mortgage-backed securities
Estimated Fair Value	0
U.S. Government sponsored enterprises
Estimated Fair Value	10,044,000	11,539,000
U.S. Government sponsored enterprises | Level 2
Estimated Fair Value	10,044,000	11,539,000
U.S. Government sponsored enterprises | Level 3
Estimated Fair Value	0
U.S. Government sponsored enterprises | Level 1
Estimated Fair Value	0	0
Private label mortgage-backed securities | Level 2
Private label mortgage-backed securities	35,352,000
US Treasury [Member]
Estimated Fair Value	7,086,000	9,814,000
US Treasury [Member] | Level 2
Estimated Fair Value	7,086,000	9,814,000
US Treasury [Member] | Level 3
Estimated Fair Value	0	0
US Treasury [Member] | Level 1
Estimated Fair Value	0	0
State and political subdivisions | Level 2
Estimated Fair Value	105,066,000	150,203,000
State and political subdivisions | Level 3
Estimated Fair Value	0
State and political subdivisions | Level 1
Estimated Fair Value	105,066,000	$ 150,203,000
Private label mortgage-backed securities
Private label mortgage-backed securities	$ 35,352,000

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