Accumulated Comprehensive Income, By Component (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance		$ 212,492	$ 194,259
Other comprehensive income (loss) before reclassifications (net of tax)		(14,670)	(1,645)
Amounts reclassified from accumulated other comprehensive income (loss) (net of tax)		60	60
Other comprehensive loss, net of tax		(14,610)	(1,585)
Balance		202,745	198,807
Accumulated Other Comprehensive Loss [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance		(155)	2,587
Other comprehensive loss, net of tax		(14,610)	(1,585)
Balance		(14,765)	1,002
Unrealized Gain (Loss) on Available for Sale Securities [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	[1]	304	6,058
Other comprehensive income (loss) before reclassifications (net of tax)	[1]	(16,580)	(3,235)
Amounts reclassified from accumulated other comprehensive income (loss) (net of tax)	[1]	0	(39)
Other comprehensive loss, net of tax	[1]	(16,580)	(3,274)
Balance	[1]	(16,276)	2,784
Defined Benefit Pension Items [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	[1]	(1,968)	(3,462)
Other comprehensive income (loss) before reclassifications (net of tax)	[1]	0	0
Amounts reclassified from accumulated other comprehensive income (loss) (net of tax)	[1]	28	72
Other comprehensive loss, net of tax	[1]	28	72
Balance	[1]	(1,940)	(3,390)
Unrealized Gain (Loss) on Interest Rate Swap [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	[1]	1,509	(9)
Other comprehensive income (loss) before reclassifications (net of tax)	[1]	1,910	1,590
Amounts reclassified from accumulated other comprehensive income (loss) (net of tax)	[1]	32	27
Other comprehensive loss, net of tax	[1]	1,942	1,617
Balance	[1]	$ 3,451	$ 1,608

[1] Amounts in parentheses indicate debits on the Consolidated Balance Sheet.