Stockholders’ Equity and Accumulated Other Comprehensive Income (Loss) - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period	$ 149,547	$ 136,085
Other comprehensive income (loss), before reclassifications	213	(2,963)
Amounts reclassified from accumulated other comprehensive income (loss)	0	0
Current period other comprehensive income (loss), before tax	213	(2,963)
Income tax benefit (expense)	(45)	622
Current period other comprehensive income (loss), net of tax	168	(2,341)
Balance at end of period	153,411	136,620
Unrealized Gains (Losses) on Securities
Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period	(24,416)	(21,461)
Other comprehensive income (loss), before reclassifications	485	(2,804)
Amounts reclassified from accumulated other comprehensive income (loss)	0	0
Current period other comprehensive income (loss), before tax	485	(2,804)
Income tax benefit (expense)	(102)	589
Current period other comprehensive income (loss), net of tax	383	(2,215)
Balance at end of period	(24,033)	(23,676)
Unrecognized Net Pension and Postretirement (Income) Costs
Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period	11,973	7,699
Other comprehensive income (loss), before reclassifications	(272)	(159)
Amounts reclassified from accumulated other comprehensive income (loss)	0	0
Current period other comprehensive income (loss), before tax	(272)	(159)
Income tax benefit (expense)	57	33
Current period other comprehensive income (loss), net of tax	(215)	(126)
Balance at end of period	11,758	7,573
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period	(12,443)	(13,762)
Balance at end of period	$ (12,275)	$ (16,103)