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Quarterly Financial Information (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017
Quarterly Financial Information (Unaudited) |  |  |  |  |  |  |  |  |  |
Total net sales | $ 68,516 | $ 70,987 | $ 61,454 | $ 54,857 | $ 57,489 | $ 60,997 | $ 54,836 | $ 50,422 | $ 255,814 | $ 223,744
Gross profit | 20,979 | 23,308 | 19,875 | 14,428 | 17,447 | 19,444 | 16,666 | 14,648 | 78,590 | 68,205
Net loss from continuing operations | $ (7,235) | $ (1,085) | $ (802) | $ (5,677) | $ (14,416) | $ (798) | $ (3,273) | $ (4,598) | $ (14,799) | $ (23,085)
Basic and diluted (loss) earnings per share: |  |  |  |  |  |  |  |  |  |
(Loss) earnings per share from continuing operations (in dollars per share) | $ (0.65) | $ (0.10) | $ (0.07) | $ (0.51) | $ (1.29) | $ (0.07) | $ (0.30) | $ (0.42) | $ (1.33) | $ (2.08)

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