Accumulated Other Comprehensive Loss - Summary of Changes in Accumulated Other Comprehensive Loss by Component (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 95,276
Transition adjustment	(952,941)		$ (978,619)
Transition adjustment	(19,639)		$ (10,923)
Ending balance	497,879
Interest Rate Derivatives [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	10,185	$ (9,363)
Gains (losses) arising during period	1,467	8,189
Amounts reclassified from accumulated other comprehensive loss	(10,156)	6,124
Net other comprehensive income (loss)	(8,689)	14,313
Ending balance	1,496	4,950
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(18,021)	(16,419)
Gains (losses) arising during period		(6,437)
Amounts reclassified from accumulated other comprehensive loss	(131)	707
Net other comprehensive income (loss)	(131)	(5,730)
Ending balance	(18,152)	(22,149)
Accumulated Other-than-Temporary Impairment of Investment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(3,087)	(3,298)
Amounts reclassified from accumulated other comprehensive loss	104	105
Net other comprehensive income (loss)	104	105
Ending balance	(2,983)	(3,193)
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(10,923)	(29,080)
Gains (losses) arising during period	1,467	1,752
Amounts reclassified from accumulated other comprehensive loss	(10,183)	6,936
Net other comprehensive income (loss)	(8,716)	8,688
Ending balance	$ (19,639)	$ (20,392)