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v3.19.3.a.u2

Segments (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales | $ 122,574 | $ 113,500 | $ 119,437 | $ 113,822 | $ 112,340 | $ 112,937 | $ 109,588 | $ 99,082 | $ 469,333 | $ 433,947 | $ 405,232
Gross profit | $ 36,381 | $ 27,410 | $ 30,204 | $ 25,430 | $ 27,846 | $ 32,830 | $ 27,661 | $ 15,196 | 119,425 | 103,533 | 123,651
Operating Segments | Units |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 434,283 | 406,331 | 384,853
Gross profit |  |  |  |  |  |  |  |  | 121,878 | 108,214 | 128,647
Operating Segments | Parts |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 35,424 | 28,456 | 22,050
Gross profit |  |  |  |  |  |  |  |  | 17,301 | 13,215 | 9,555
Other |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | (374) | (840) | (1,671)
Gross profit |  |  |  |  |  |  |  |  | (19,754) | (17,896) | (14,551)
Inter-segment |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 28,053 | 29,385 | 29,293
Gross profit |  |  |  |  |  |  |  |  | $ 985 | $ 865 | $ 426

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