Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	$ (2,514)	$ 2,606	$ (10,866)	$ 19,622
Change in Other comprehensive income before reclassification, Unrealized gains and Losses on available-for-sale Securities	(2,981)	2,227	(12,198)	18,624
Amount reclassified from accumalted other comperhensive income, unrealized gain and losses and available for sale securities	467	379	1,332	998
Net Current period other comprehensive other income, Unrealized gains and Losses on available-for-sale Securities	(2,514)	2,606		19,622
TOTAL Balance	1,412	9,515	9,764	(7,501)
TOTAL Balance	(1,102)	12,121	(1,102)	12,121
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	(2,985)	2,223	(12,281)	18,451
Change in Other comprehensive income before reclassification, Unrealized gains and Losses on available-for-sale Securities	(2,981)	2,227	(12,198)	18,624
Amount reclassified from accumalted other comperhensive income, unrealized gain and losses and available for sale securities	(4)	(4)	(83)	(173)
Net Current period other comprehensive other income, Unrealized gains and Losses on available-for-sale Securities	(2,985)	2,223		18,451
TOTAL Balance	24,866	31,121	34,162	14,893
TOTAL Balance	21,881	33,344	21,881	33,344
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	471	383	1,415	1,171
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	471	383	1,415	1,171
Net Current period other comprehensive other income, Unrealized gains and Losses on available-for-sale Securities	471	383		1,171
TOTAL Balance	(23,454)	(21,606)	(24,398)	(22,394)
TOTAL Balance	$ (22,983)	$ (21,223)	$ (22,983)	$ (21,223)