Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Summary of Employee and Nonemployee Stock Option Activity (Detail)

v3.5.0.2
Stock-Based Compensation - Summary of Employee and Nonemployee Stock Option Activity (Detail) - USD ($)
$ / shares in Units, $ in Thousands
6 Months Ended 12 Months Ended
Jul. 19, 2016
Jun. 30, 2016
Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Exercisable (in dollars per share)   $ 10.43  
Options Outstanding, Number of Shares Outstanding      
Outstanding, beginning balance (in shares)   1,961,000  
Canceled or expired (in shares)   (69,000)  
Outstanding, ending balance (in shares)   1,892,000 1,961,000
Exercisable   1,173,000  
Options Outstanding, Weighted-Average Exercise Price      
Outstanding, beginning balance (in dollars per share)   $ 10.55  
Cancelled or expired (in dollars per share)   9.78  
Outstanding, ending balance (in dollars per share)   $ 10.57 $ 10.55
Weighted-Average Remaining Contractual Term (in years)      
Outstanding   7 years 1 month 17 days 7 years 8 months 5 days
Exercisable   6 years 5 months 16 days  
Aggregate Intrinsic Value      
Outstanding, beginning balance   $ 0  
Outstanding, ending balance   0 $ 0
Exercisable   $ 0  
Subsequent Event      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares available for future awards 181,800    
Exercisable (in dollars per share) $ 2.02    
Minimum | Subsequent Event | Stock options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period 2 years 6 months    
Maximum | Subsequent Event | Stock options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period 5 years