Quarterly report pursuant to Section 13 or 15(d)

Net Loss Per Share - Reconciliation of Numerator and Denominator (Detail)

v3.5.0.2
Net Loss Per Share - Reconciliation of Numerator and Denominator (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Numerator:        
Net loss - basic and diluted $ (5,696) $ (6,431) $ (20,412) $ (25,891)
Denominator:        
Weighted average common shares outstanding - basic and diluted 71,536 71,382 71,512 69,833
Net loss per share        
Basic $ (0.08) $ (0.09) $ (0.29) $ (0.37)
Diluted $ (0.08) $ (0.09) $ (0.29) $ (0.37)