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ACQUISITION OF SUPREME INDUSTRIES, INC. - Narrative (Details) - USD ($) |  | 12 Months Ended |
--- | --- | --- | ---
Sep. 27, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Sep. 26, 2017
Business Acquisition [Line Items] |  |  |  |  |
Acquisition expenses |  | $ 68,000 | $ 9,605,000 | $ 0 |
Goodwill |  | 311,084,000 | 317,464,000 | $ 148,367,000 |
Goodwill, period increase (decrease) |  | (1,500,000) |  |  |
Senior Notes |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Debt instrument, face amount | $ 325,000,000 |  |  |  | $ 325,000,000
Notes issued, interest rate | 5.50% |  |  |  | 5.50%
Supreme Industries Inc. |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Business acquisition, share price (in usd per share) | $ 21 |  |  |  |
Intangible assets | $ 161,200,000 |  |  |  |
Goodwill | 167,714,000 |  |  |  |
Revenues |  | 347,300,000 | 67,100,000 |  |
Net income (loss), including portion attributable to noncontrolling interest |  | $ 13,300,000 | $ (1,600,000) |  |
Supreme Industries Inc. | Class A and Class B |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Payments to acquire businesses, gross | $ 360,400,000 |  |  |  |

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