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v3.20.4

Segments (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales | $ 116,700 | $ 134,772 | $ 125,596 | $ 137,483 | $ 122,574 | $ 113,500 | $ 119,437 | $ 113,822 | $ 514,551 | $ 469,333 | $ 433,947
Gross profit | $ 33,923 | $ 40,848 | $ 38,131 | $ 42,947 | $ 36,381 | $ 27,410 | $ 30,204 | $ 25,430 | 155,849 | 119,425 | 103,533
Operating Segments | Units |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 480,629 | 434,283 | 406,331
Gross profit |  |  |  |  |  |  |  |  | 164,048 | 121,878 | 108,214
Operating Segments | Parts |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 34,577 | 35,424 | 28,456
Gross profit |  |  |  |  |  |  |  |  | 15,592 | 17,301 | 13,215
Other |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | (655) | (374) | (840)
Gross profit |  |  |  |  |  |  |  |  | (23,791) | (19,754) | (17,896)
Inter-segment |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 24,236 | 28,053 | 29,385
Gross profit |  |  |  |  |  |  |  |  | $ (1,461) | $ 985 | $ 865

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