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Supplemental Cash Flow Disclosures (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Cash paid during the period for:
Interest			$ 1,529	$ 1,814
Income taxes			3,030	2,380
Noncash investing and financing activities:
Unrealized gain on unrecognized post retirement costs	$ 24	$ 20	74	60
Unrealized (loss) gain on available for sale securities	(60)	334	(307)	1,161
Unrealized gain (loss) on junior subordinated debentures	$ (8)	$ (326)	317	(779)
Cash dividend declared			$ 1,871	$ 1,867

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