Annual report pursuant to Section 13 and 15(d)

Quarterly Information (Unaudited) (Detail)

v3.7.0.1
Quarterly Information (Unaudited) (Detail) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Quarterly Financial Information [Line Items]                      
Revenues $ 51,200 $ 50,200 $ 43,100 $ 27,600 $ 44,400 $ 37,700 $ 27,300 $ 20,300 $ 172,121 $ 129,656 $ 76,840
Gross profit 17,600 15,900 13,300 9,100 14,900 12,200 9,000 7,200 55,871 43,290 24,223
Net income (loss) $ 1,600 $ 1,600 $ (1,100) $ (2,600) $ 1,400 $ (300) $ (1,500) $ (2,000) $ (522) $ (2,382) $ (5,180)
Basic and diluted income (loss) per common share $ 0.08 $ 0.08 $ (0.06) $ (0.16) $ 0.09 $ (0.02) $ (0.10) $ (0.15) $ (0.03) $ (0.16) $ (1.39)