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v3.20.4

Segments - Reconciliation of Net Income to Gross Margin (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Reconciliation Net Income (Loss) to Gross Margin |  |  |  |
Total gross margin |  | $ 497,777 | $ 509,247 | $ 440,074
Less: |  |  |  |
Selling, general and administrative |  | 105,100 | 117,727 | 101,563
Depreciation and amortization |  | 193,138 | 188,084 | 174,946
Long-lived and other asset impairment |  | 79,556 | 44,663 | 28,127
Goodwill impairment | $ 99,800 | 99,830 |  |
Restatement and other charges |  |  | 445 | 19
Restructuring charges |  | 8,450 |  |
Interest expense |  | 105,716 | 104,681 | 93,328
Debt extinguishment loss |  | 3,971 | 3,653 | 2,450
Transaction-related costs |  |  | 8,213 | 10,162
(Gain) loss on sale of assets, net |  | (10,643) | (16,016) | (5,674)
Other income, net |  | (1,359) | (661) | (157)
Income (loss) before income taxes |  | $ (85,982) | $ 58,458 | $ 35,310

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- Definition Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity, excluding depreciation and amortization expense. Gross margin is a non-GAAP financial measure. + References No definition available. + Details
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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e1043-128460 + Details
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