Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	$ (10,596)	$ 13,502
Change in Other comprehensive income before reclassification, Unrealized gains and Losses on available-for-sale Securities	(11,182)	13,244
Amount reclassified from accumalted other comperhensive income, unrealized gain and losses and available for sale securities	586	258
Net Current period other comprehensive other income, Unrealized gains and Losses on available-for-sale Securities	(10,596)	13,502
TOTAL Balance	9,764	(7,501)
TOTAL Balance	(832)	6,001
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(11,068)	13,098
Change in Other comprehensive income before reclassification, Unrealized gains and Losses on available-for-sale Securities	(11,182)	13,244
Amount reclassified from accumalted other comperhensive income, unrealized gain and losses and available for sale securities	114	(146)
Net Current period other comprehensive other income, Unrealized gains and Losses on available-for-sale Securities	(11,068)	13,098
TOTAL Balance	34,162	14,893
TOTAL Balance	23,094	27,991
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	472	404
Change in Other comprehensive income before reclassification, Unrealized gains and Losses on available-for-sale Securities	0	0
Amount reclassified from accumalted other comperhensive income, unrealized gain and losses and available for sale securities	472	404
Net Current period other comprehensive other income, Unrealized gains and Losses on available-for-sale Securities	472	404
TOTAL Balance	(24,398)	(22,394)
TOTAL Balance	$ (23,926)	$ (21,990)