Stockholders' Equity (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period	$ 148,956	$ 130,589
Other comprehensive (loss) income, before reclassifications	(54,985)	(3,830)
Amounts reclassified from accumulated other comprehensive income (loss)	0	(95)
Current period other comprehensive (loss) income, before tax	(54,985)	(3,925)
Income tax benefit (expense)	11,547	825
Current period other comprehensive (loss) income, net of tax	(43,438)	(3,100)
Balance at end of period	115,405	139,094
Unrealized Gains (Losses) on Securities
Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period	362	3,353
Other comprehensive (loss) income, before reclassifications	(54,985)	(4,105)
Amounts reclassified from accumulated other comprehensive income (loss)	0	(95)
Current period other comprehensive (loss) income, before tax	(54,985)	(4,200)
Income tax benefit (expense)	11,547	883
Current period other comprehensive (loss) income, net of tax	(43,438)	(3,317)
Balance at end of period	(43,076)	36
Unrecognized Net Pension and Postretirement Costs
Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period	2,931	(1,825)
Other comprehensive (loss) income, before reclassifications	0	275
Amounts reclassified from accumulated other comprehensive income (loss)	0	0
Current period other comprehensive (loss) income, before tax	0	275
Income tax benefit (expense)	0	(58)
Current period other comprehensive (loss) income, net of tax	0	217
Balance at end of period	2,931	(1,608)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period	3,293	1,528
Balance at end of period	$ (40,145)	$ (1,572)