Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Accumulated Other Comprehensive Loss [Roll Forward]
Equity, beginning balance	$ 1,156,183	$ 2,130,825
Other comprehensive income (loss) before reclassifications	0	0
Amounts reclassified from AOCI, net of tax	34	25
Net current-period other comprehensive income (loss)	34	25
Equity, ending balance	1,161,962	2,099,808
Defined Benefit Pension Items
Accumulated Other Comprehensive Loss [Roll Forward]
Equity, beginning balance	(75,247)	(77,327)
Other comprehensive income (loss) before reclassifications	0	0
Amounts reclassified from AOCI, net of tax	29	25
Net current-period other comprehensive income (loss)	29	25
Equity, ending balance	(75,218)	(77,302)
Tax on amount reclassified from AOCI	11	8
Other
Accumulated Other Comprehensive Loss [Roll Forward]
Equity, beginning balance	(263)	(144)
Other comprehensive income (loss) before reclassifications	0	0
Amounts reclassified from AOCI, net of tax	5	0
Net current-period other comprehensive income (loss)	5	0
Equity, ending balance	(258)	(144)
AOCI Attributable to Parent
Accumulated Other Comprehensive Loss [Roll Forward]
Equity, beginning balance	(75,510)	(77,471)
Equity, ending balance	$ (75,476)	$ (77,446)