Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Changes in AOCI, Net
Total accumulated other comprehensive (loss) income, beginning of period	$ (4,525)
Total accumulated other comprehensive (loss) income, end of period	(3,445)
Changes in Fair Market Value of Derivatives
Changes in AOCI, Gross
Gross, beginning of the period	(634)	$ (1,038)
Gross, gain (loss) recognized in OCI	1,577	206
Gross, gain (loss) reclassified from AOCI to earnings	26	(45)
Gross, ending balance	969	(877)
Changes in AOCI, Income tax benefit (expense)
Income tax benefit (expense), beginning of period	147	240
Income tax benefit (expense), gain (loss) recognized in OCI	(363)	(47)
Income tax benefit (expense), gain (loss) reclassified from AOCI to earnings	(5)	10
Income tax benefit (expense), ending of period	(221)	203
Changes in AOCI, Net
Total accumulated other comprehensive (loss) income, beginning of period	(487)	(798)
Gain (loss) recognized in OCI, net	1,214	159
(Gain) Loss reclassified from AOCI to earnings, net	21	(35)
Total accumulated other comprehensive (loss) income, end of period	748	(674)
Changes in Unrealized Pension Cost
Changes in AOCI, Gross
Gross, beginning of the period	(2,744)	(128,004)
Gross, gain (loss) recognized in OCI	0	0
Gross, gain (loss) reclassified from AOCI to earnings	120	1,847
Gross, ending balance	(2,624)	(126,157)
Changes in AOCI, Income tax benefit (expense)
Income tax benefit (expense), beginning of period	738	34,917
Income tax benefit (expense), gain (loss) recognized in OCI	0	0
Income tax benefit (expense), gain (loss) reclassified from AOCI to earnings	(26)	(425)
Income tax benefit (expense), ending of period	712	34,492
Changes in AOCI, Net
Total accumulated other comprehensive (loss) income, beginning of period	(2,006)	(93,087)
Gain (loss) recognized in OCI, net	0	0
(Gain) Loss reclassified from AOCI to earnings, net	94	1,422
Total accumulated other comprehensive (loss) income, end of period	(1,912)	(91,665)
Cumulative Translation Adjustment
Changes in AOCI, Gross
Gross, beginning of the period	(2,032)	(2,036)
Gross, gain (loss) recognized in OCI	(249)	12
Gross, gain (loss) reclassified from AOCI to earnings	0	0
Gross, ending balance	(2,281)	(2,024)
Changes in AOCI, Income tax benefit (expense)
Income tax benefit (expense), beginning of period	0	0
Income tax benefit (expense), gain (loss) recognized in OCI	0	0
Income tax benefit (expense), gain (loss) reclassified from AOCI to earnings	0	0
Income tax benefit (expense), ending of period	0	0
Changes in AOCI, Net
Total accumulated other comprehensive (loss) income, beginning of period	(2,032)	(2,036)
Gain (loss) recognized in OCI, net	(249)	12
(Gain) Loss reclassified from AOCI to earnings, net	0	0
Total accumulated other comprehensive (loss) income, end of period	(2,281)	(2,024)
Accumulated Other Comprehensive (Loss) Income
Changes in AOCI, Net
Total accumulated other comprehensive (loss) income, beginning of period	(4,525)	(95,921)
Gain (loss) recognized in OCI, net	965	171
(Gain) Loss reclassified from AOCI to earnings, net	115	1,387
Total accumulated other comprehensive (loss) income, end of period	$ (3,445)	$ (94,363)