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v3.21.2

Segment Information - Segment Reconciliation of Operating Income to Net Income (Details) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Segment Reporting Information [Line Items] |  |  |  |
Total Segment EBITDA | $ 96,753,000 | $ 118,135,000 | $ 201,686,000 | $ 230,914,000
Interest expense | (19,170,000) | (18,012,000) | (34,842,000) | (37,942,000)
Depreciation and amortization | (29,908,000) | (37,606,000) | (49,626,000) | (75,429,000)
Other components of net periodic pension benefit (cost) | 272,000 | (936,000) | 725,000 | (1,137,000)
(Loss) on termination of leaseback obligations | (3,110,000) | 0 | (3,409,000) | 0
Impairment charges | (3,611,000) | (18,132,000) | (3,611,000) | (18,230,000)
Restructuring and integration expenses | (3,489,000) | (7,347,000) | (12,723,000) | (17,192,000)
Transaction costs | (5,440,000) | (3,232,000) | (15,986,000) | (9,766,000)
Stock-based compensation expense (benefit) | (1,921,000) | (580,000) | (3,892,000) | 5,484,000
Gain (loss) from remeasurement of indemnification asset | 844,000 | (617,000) | 844,000 | (4,418,000)
Other | 1,251,000 | 955,000 | 1,620,000 | 1,855,000
Income before (provision) for income taxes | 32,471,000 | 32,628,000 | 80,786,000 | 74,139,000
Severance costs | 566,000 | 4,005,000 | 1,170,000 | 7,349,000
COVID-19 Terminations |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Severance costs | $ 0 | $ 4,000,000.0 | $ 0 | $ 5,000,000.0

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