Accumulated Other Comprehensive Gain (Loss) - Schedule of Reclassifications out of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Reclassifications out of accumulated other comprehensive income
Net unrealized gain on available for sale securities	$ 21	$ 13
Income tax effect	(661)	(812)
Net unrecognized pension costs	(5,667)	(5,501)
Net Income	3,073	3,944
Amount Reclassified from Accumulated Other Comprehensive Loss | Net unrealized gain on available for sale securities
Reclassifications out of accumulated other comprehensive income
Net unrealized gain on available for sale securities	21	13
Income tax effect	(4)	(3)
Net Income	17	10
Amount Reclassified from Accumulated Other Comprehensive Loss | Defined Benefit Plan
Reclassifications out of accumulated other comprehensive income
Income tax effect	8	10
Net unrecognized pension costs	(41)	(47)
Net Income	$ (33)	$ (37)