Accumulated Other Comprehensive Income Balances Of Each Component Of Accumulated Other Comprehensive Income, Net Of Tax (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024	Dec. 31, 2023
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Other comprehensive income (loss), net of tax	$ 230	$ (292)
Total stockholders' equity	254,412	253,962	$ 251,773	$ 251,553
Unrealized Gains and Losses On Available-for-Sale Securities
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Other comprehensive (loss) income before calculations	177	(333)
Amounts reclassified from accumulated other comprehensive income	(3)	41
Other comprehensive income (loss), net of tax	174	(292)
Total stockholders' equity	474	291	300	583
Postretirement Benefit Plans
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Other comprehensive (loss) income before calculations	56	0
Amounts reclassified from accumulated other comprehensive income	0	0
Other comprehensive income (loss), net of tax	56	0
Total stockholders' equity	111	55	55	55
Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Other comprehensive (loss) income before calculations	233	(333)
Amounts reclassified from accumulated other comprehensive income	(3)	41
Other comprehensive income (loss), net of tax	230	(292)
Total stockholders' equity	$ 585	$ 346	$ 355	$ 638