Other Comprehensive Income - Activity in AOCI, net of tax (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Other Comprehensive Income Loss Net Of Tax Period Increase Decrease [Abstract]
Securities Available For Sale, Beginning balance	$ 4,839	$ (2,057)
Securities Available For Sale, Other comprehensive income before reclassifications	10,538	7,176
Securities Available For Sale, Amounts reclassified from accumulated other comprehensive income	(1,157)	(9)
Securities Available For Sale, Net other comprehensive income during period	9,381	7,167
Securities Available For Sale, Ending balance	14,220	5,110
Post-retirement Benefit, Beginning balance	(244)	(91)
Post-retirement Benefit, Amounts reclassified from accumulated other comprehensive income		82
Post-retirement Benefit, Net other comprehensive income during period		82
Post-retirement Benefit, Ending balance	(244)	(9)
Accumulated Other Comprehensive Income (Loss), Beginning balance	4,595	(2,148)
Accumulated Other Comprehensive Income (Loss), Other comprehensive income before reclassifications	10,538	7,176
Accumulated Other Comprehensive Income (Loss), Amounts reclassified from accumulated other comprehensive income	(1,157)	73
Accumulated Other Comprehensive Income (Loss), Net other comprehensive income during period	9,381	7,249
Accumulated Other Comprehensive Income (Loss), Ending balance	$ 13,976	$ 5,101