Accumulated Other Comprehensive Loss - Summary of Changes in Accumulated Other Comprehensive Loss by Component (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 95,276
Transition adjustment	(971,995)		$ (978,619)
Transition adjustment	(19,692)		$ (10,923)
Ending balance	470,944
Interest Rate Derivatives [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	10,185	$ (9,363)
Gains (losses) arising during period	3,029	15,642
Amounts reclassified from accumulated other comprehensive loss	(11,734)	6,375
Net other comprehensive income (loss)	(8,705)	22,017
Ending balance	1,480	12,654
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	(220)	1,416
Net other comprehensive income (loss)	(220)	(5,021)
Ending balance	(18,241)	(21,440)
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	156	158
Net other comprehensive income (loss)	156	158
Ending balance	(2,931)	(3,140)
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(10,923)	(29,080)
Gains (losses) arising during period	3,029	9,205
Amounts reclassified from accumulated other comprehensive loss	(11,798)	7,949
Net other comprehensive income (loss)	(8,769)	17,154
Ending balance	$ (19,692)	$ (11,926)