Quarterly report pursuant to Section 13 or 15(d)

Basic Net Income (loss) Per Share is Calculated Using Weighted Average Number of Shares (Detail)

v3.8.0.1
Basic Net Income (loss) Per Share is Calculated Using Weighted Average Number of Shares (Detail) - $ / shares
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Earnings per share - basic $ 0.07 $ 0.17
Earnings per share - diluted $ 0.06 $ 0.15
Weighted average shares of common stock outstanding - basic 32,421,467 25,067,954
Weighted average shares of common stock outstanding - diluted 38,098,373 28,445,647