Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	$ 3,514	$ 8,645	$ 17,016	$ 19,172
Change in Other comprehensive income before reclassification, Unrealized gains and Losses on available-for-sale Securities	3,153	8,353	16,397	18,574
Amount reclassified from accumalted other comperhensive income, unrealized gain and losses and available for sale securities	361	292	619	598
Net Current period other comprehensive other income, Unrealized gains and Losses on available-for-sale Securities	3,514	8,645		19,172
TOTAL Balance	6,001	(12,927)	(7,501)	(23,454)
TOTAL Balance	9,515	(4,282)	9,515	(4,282)
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	3,130	8,341	16,228	18,565
Change in Other comprehensive income before reclassification, Unrealized gains and Losses on available-for-sale Securities	3,153	8,353	16,397	18,574
Amount reclassified from accumalted other comperhensive income, unrealized gain and losses and available for sale securities	(23)	(12)	(169)	(9)
Net Current period other comprehensive other income, Unrealized gains and Losses on available-for-sale Securities	3,130	8,341		18,565
TOTAL Balance	27,991	4,119	14,893	(6,105)
TOTAL Balance	31,121	12,460	31,121	12,460
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	384	304	788	607
Change in Other comprehensive income before reclassification, Unrealized gains and Losses on available-for-sale Securities	0	0	0	0
Amount reclassified from accumalted other comperhensive income, unrealized gain and losses and available for sale securities	384	304	788	607
Net Current period other comprehensive other income, Unrealized gains and Losses on available-for-sale Securities	384	304		607
TOTAL Balance	(21,990)	(17,046)	(22,394)	(17,349)
TOTAL Balance	$ (21,606)	$ (16,742)	$ (21,606)	$ (16,742)