XML 91 R74.htm IDEA: XBRL DOCUMENT v3.10.0.1
Quarterly financial summary (unaudited) - Schedule of Unaudited Quarterly Results (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
Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract]                      
Net sales $ 78,571 $ 63,889 $ 59,055 $ 65,920 $ 81,593 $ 71,865 $ 55,856 $ 60,574 $ 267,435 $ 269,888 $ 229,567
Gross profit 46,919 38,969 36,645 40,208 47,694 42,913 35,890 38,228 162,741 164,725 132,235
Net income $ 9,672 $ 3,915 $ 1,248 $ 690 $ 21,480 $ 5,865 $ 3,970 $ 2,160 $ 15,525 $ 33,475 $ 5,313
Net income (loss) per share:                      
Basic (in USD per share) $ 0.20 $ 0.08 $ 0.03 $ 0.01 $ 0.47 $ 0.13 $ 0.09 $ 0.05 $ 0.33 $ 0.74 $ (39.47)
Diluted (in USD per share) $ 0.20 $ 0.08 $ 0.03 $ 0.01 0.44 $ 0.12 $ 0.08 $ 0.04 $ 0.32 $ 0.68 $ (39.47)
Impact of Tax Act, basic (in USD per share)         0.25            
Impact of Tax Act, diluted (in USD per share)         $ 0.23