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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 |

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