Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Quarterly Financial Data (Unaudited) - Summary of Selected Quarterly Financial Data (Detail)

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Quarterly Financial Data (Unaudited) - Summary of Selected Quarterly Financial Data (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]                      
Net revenues $ 67,792 $ 63,052 $ 66,090 $ 61,676 $ 60,489 $ 60,761 $ 63,129 $ 59,704 $ 258,611 $ 244,083 $ 99,802
Gross profit 33,132 28,810 31,178 27,196 27,256 27,345 28,605 27,173 120,316 110,379 43,756
Net (loss) 4,951 (5,100) (43) (654) (6,224) (67) 413 155 (846) (5,723) (2,535)
Deemed dividends on preferred stock and amortization of preferred stock beneficial conversion feature 2,691 2,651 2,639 2,566 7,973 5,567 5,567 5,567 10,547 24,674  
NET LOSS ATTRIBUTABLE TO COMMON STOCKHOLDERS $ 2,260 $ (7,751) $ (2,682) $ (3,220) $ (14,197) $ (5,634) $ (5,154) $ (5,412) $ (11,393) $ (30,397) $ (2,657)
Net income (loss) per common share:                      
Basic $ 0.03 $ (0.10) $ (0.03) $ (0.04) $ (0.18) $ (0.07) $ (0.07) $ (0.07) $ (0.14) $ (0.39) $ (0.04)
Diluted $ 0.03 $ (0.10) $ (0.03) $ (0.04) $ (0.18) $ (0.07) $ (0.07) $ (0.07) $ (0.14) $ (0.39) $ (0.04)
Basic weighted average common shares outstanding 86,676 79,617 79,413 78,650 78,490 78,145 77,448 76,068 79,426 77,542 60,526
Weighted average shares outstanding – Diluted 88,611 79,617 79,413 78,650 78,490 78,145 77,448 76,068 79,426 77,542 60,526