Segment Information - Segment Reconciliation of Operating Income to Net Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Segment Reporting [Abstract]
Income before income tax expense	$ 80,202	$ 32,471	$ 123,334	$ 80,786
Interest expense	14,652	19,170	29,519	34,842
Depreciation and amortization	20,592	29,908	42,561	49,626
Other components of net periodic pension (benefit)	(9,153)	(272)	(9,223)	(725)
Loss on termination of leaseback obligations	0	3,110	0	3,409
Impairment charges	222	3,611	222	3,611
Restructuring and integration expenses	4,822	3,489	10,649	12,723
Transaction costs	1,616	5,440	3,336	15,986
Stock-based compensation expense	3,810	1,921	5,738	3,892
(Gain) from remeasurement of indemnification asset	(487)	(844)	(887)	(844)
Other	276	1,251	5,532	1,620
Total Segment Adjusted EBITDA	$ 116,000	$ 96,753	$ 199,717	$ 201,686