Segment Information - Segment Reconciliation of Operating Income to Net Income (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Income before income tax (expense) benefit	$ 134,314,000	$ 41,238,000	$ 53,566,000
Impact of ASC 842	350,523,000	371,839,000	481,099,000
Interest expense	66,374,000	68,539,000	92,951,000
Depreciation and amortization	105,473,000	146,523,000	206,270,000
Other components of net periodic pension (benefit) cost	(14,829,000)	42,236,000	53,161,000
Impairment charges	3,611,000	24,911,000	5,670,000
Restructuring and integration expenses	18,145,000	28,459,000	40,290,000
Transaction costs	25,059,000	20,999,000	6,081,000
Stock-based compensation expense (benefit)	8,094,000	(2,895,000)	14,119,000
(Gain) loss from remeasurement of indemnification asset	(1,000)	5,443,000	4,093,000
Other	4,283,000	(3,614,000)	5,432,000
Segment Adjusted EBITDA	350,523,000	371,839,000	481,099,000
Severance costs	4,684,000	11,685,000
Accounting Standards Update 2016-02
Segment Reporting Information [Line Items]
Impact of ASC 842	0	0	(534,000)
Segment Adjusted EBITDA	0	0	$ (534,000)
COVID-19 Related
Segment Reporting Information [Line Items]
Severance costs	$ 0	$ 5,000,000