Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Stock Option Activity (Detail)

v3.3.0.814
Stockholders' Equity - Stock Option Activity (Detail) - USD ($)
$ / shares in Units, $ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2015
Dec. 31, 2014
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Number of shares,Outstanding at December 31, 2014 2,164,365  
Number of Shares, Options granted 0  
Number of Shares, Options exercised (100,000)  
Number of Shares,Options cancelled (285,000)  
Number of Shares, Outstanding at September 30, 2015 1,779,365 2,164,365
Total Weighted Average Intrinsic Value, Options cancelled 1,632,698  
Weighted Average Exercise Price,Outstanding at December 31, 2014 $ 4.69  
Weighted Average Exercise Price, Options granted 0  
Weighted Average Exercise Price, Options exercised 2.15  
Weighted Average Exercise Price,Options cancelled 7.57  
Weighted Average Exercise Price, Outstanding at September 30, 2015 4.37 $ 4.69
Weighted Average Exercise Price, Options vested and expected to vest $ 4.40  
Total Weighted Average Intrinsic Value, Outstanding at December 31, 2014 $ 0  
Total Weighted Average Intrinsic Value, Options granted 0  
Total Weighted Average Intrinsic Value, Options exercised 45  
Total Weighted Average Intrinsic Value, Options cancelled 1,417  
Total Weighted Average Intrinsic Value, Outstanding at September 30, 2015 0 $ 0
Total Weighted Average Intrinsic Value, Options vested and exercisable $ 0  
Weighted Average Remaining Contractual Life, Outstanding 6 years 6 months 25 days 7 years 4 months 17 days
Weighted Average Remaining Contractual Life, Options vested and exercisable 6 years 5 months 12 days