Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	$ (55,605)	$ 2,244	$ (124,204)	$ (8,352)
Change in Other comprehensive income before reclassification, Unrealized gains and Losses on available-for-sale Securities	(55,919)	1,965	(124,829)	(9,217)
Amount reclassified from accumalted other comperhensive income, unrealized gain and losses and available for sale securities	314	279	625	865
Net Current period other comprehensive other income, Unrealized gains and Losses on available-for-sale Securities	(55,605)	2,244		(8,352)
TOTAL Balance	(71,025)	(832)	(2,426)	9,764
TOTAL Balance	(126,630)	1,412	(126,630)	1,412
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	(55,919)	1,772	(124,833)	(9,296)
Change in Other comprehensive income before reclassification, Unrealized gains and Losses on available-for-sale Securities	(55,919)	1,965	(124,829)	(9,217)
Amount reclassified from accumalted other comperhensive income, unrealized gain and losses and available for sale securities	0	(193)	(4)	(79)
Net Current period other comprehensive other income, Unrealized gains and Losses on available-for-sale Securities	(55,919)	1,772		(9,296)
TOTAL Balance	(53,240)	23,094	15,674	34,162
TOTAL Balance	(109,159)	24,866	(109,159)	24,866
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	314	472	629	944
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	314	472	629	944
Net Current period other comprehensive other income, Unrealized gains and Losses on available-for-sale Securities	314	472		944
TOTAL Balance	(17,785)	(23,926)	(18,100)	(24,398)
TOTAL Balance	$ (17,471)	$ (23,454)	$ (17,471)	$ (23,454)