Accumulated Other Comprehensive (Loss) Income - Components of Accumulated Other Comprehensive (loss) Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Changes in AOCI, Net
Total accumulated other comprehensive (loss) income, beginning of period	$ (95,921)
Total accumulated other comprehensive (loss) income, end of period	(4,525)	$ (95,921)
Changes in Fair Market Value of Derivatives
Changes in AOCI, Gross
Gross, beginning of the period	(1,038)	659
Gross, gain (loss) recognized in OCI	1,043	(3,015)
Gross, gain (loss) reclassified from AOCI to earnings	(640)	1,318
Gross, ending balance	(635)	(1,038)
Changes in AOCI, Income tax benefit (expense)
Income tax benefit (expense), beginning of period	240	(150)
Income tax benefit (expense), gain (loss) recognized in OCI	(240)	684
Income tax benefit (expense), gain (loss) reclassified from AOCI to earnings	147	(294)
Income tax benefit (expense), ending of period	147	240
Changes in AOCI, Net
Total accumulated other comprehensive (loss) income, beginning of period	(798)	509
Gain (loss) recognized in OCI, net	803	(2,331)
(Gain) Loss reclassified from AOCI to earnings, net	(493)	1,024
Total accumulated other comprehensive (loss) income, end of period	(488)	(798)
Changes in Unrealized Pension Cost
Changes in AOCI, Gross
Gross, beginning of the period	(128,004)	(124,140)
Gross, gain (loss) recognized in OCI	(4,951)
Gross, gain (loss) reclassified from AOCI to earnings	130,211	(3,864)
Gross, ending balance	(2,744)	(128,004)
Changes in AOCI, Income tax benefit (expense)
Income tax benefit (expense), beginning of period	34,917	34,018
Income tax benefit (expense), gain (loss) recognized in OCI	1,139
Income tax benefit (expense), gain (loss) reclassified from AOCI to earnings	(35,318)	899
Income tax benefit (expense), ending of period	738	34,917
Changes in AOCI, Net
Total accumulated other comprehensive (loss) income, beginning of period	(93,087)	(90,122)
Gain (loss) recognized in OCI, net	(3,812)
(Gain) Loss reclassified from AOCI to earnings, net	94,893	(2,965)
Total accumulated other comprehensive (loss) income, end of period	(2,006)	(93,087)
Cumulative Translation Adjustment
Changes in AOCI, Gross
Gross, beginning of the period	(2,036)	(2,211)
Gross, gain (loss) recognized in OCI	4	175
Gross, ending balance	(2,032)	(2,036)
Changes in AOCI, Income tax benefit (expense)
Income tax benefit (expense), beginning of period		98
Income tax benefit (expense), gain (loss) recognized in OCI		(98)
Changes in AOCI, Net
Total accumulated other comprehensive (loss) income, beginning of period	(2,036)	(2,113)
Gain (loss) recognized in OCI, net	4	77
Total accumulated other comprehensive (loss) income, end of period	(2,032)	(2,036)
Accumulated Other Comprehensive (Loss) Income
Changes in AOCI, Net
Total accumulated other comprehensive (loss) income, beginning of period	(95,921)	(91,726)
Gain (loss) recognized in OCI, net	(3,005)	(2,254)
(Gain) Loss reclassified from AOCI to earnings, net	94,400	(1,941)
Total accumulated other comprehensive (loss) income, end of period	$ (4,526)	$ (95,921)