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Discontinued Operations Results of Discontinued Operations (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Net loss on dispositions of assets | $ (1,290) | $ (150) | $ (90)
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent | $ 0 | 36,680 | 9,590
Discontinued Operations, Disposed of by Sale [Member] |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Disposal Group, Including Discontinued Operation, Revenue |  | 182,590 | 172,110
Disposal Group, Including Discontinued Operation, Costs of Goods Sold |  | (138,100) | (128,100)
Disposal Group, Including Discontinued Operation, Gross Profit (Loss) |  | 44,490 | 44,010
Disposal Group, Including Discontinued Operations, SG&A |  | (32,920) | (30,590)
Net loss on dispositions of assets |  | 38,900 | (160)
Disposal Group, Including Discontinued Operation, Operating Income (Loss) |  | 50,470 | 13,260
Disposal Group, Including Discontinued Operations, Other Expense, net |  | (30) | 360
Disposal Group, Including Discontinued Operations, Nonoperating Expense |  | (30) | 360
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax |  | 50,440 | 13,620
Discontinued Operation, Tax Effect of Discontinued Operation |  | (13,760) | (4,030)
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent |  | $ 36,680 | $ 9,590

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