Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ (125,589)	$ (71,025)	$ (139,974)	$ (2,426)
Change in Other comprehensive income (loss) before reclassification, Unrealized gains and Losses on available-for-sale Securities	(15,808)	(55,919)	(1,570)	(124,829)
Amount reclassified from accumulated other comprehensive income, unrealized gain and losses and available for sale securities	147	314	294	625
Net current period other comprehensive income (loss)	(15,661)	(55,605)	(1,276)	(124,204)
Ending balance	(141,250)	(126,630)	(141,250)	(126,630)
Unrealized gains and (Losses) on available- for-sale Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(114,658)	(53,240)	(128,896)	15,674
Change in Other comprehensive income (loss) before reclassification, Unrealized gains and Losses on available-for-sale Securities	(15,808)	(55,919)	(1,570)	(124,829)
Amount reclassified from accumulated other comprehensive income, unrealized gain and losses and available for sale securities				(4)
Net current period other comprehensive income (loss)	(15,808)	(55,919)	(1,570)	(124,833)
Ending balance	(130,466)	(109,159)	(130,466)	(109,159)
Retirement plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(10,931)	(17,785)	(11,078)	(18,100)
Amount reclassified from accumulated other comprehensive income, unrealized gain and losses and available for sale securities	147	314	294	629
Net current period other comprehensive income (loss)	147	314	294	629
Ending balance	$ (10,784)	$ (17,471)	$ (10,784)	$ (17,471)