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Stock-Based Compensation - Summary of Restricted Stock Awards Activity (Detail) - Restricted Stock [Member]
12 Months Ended
Dec. 31, 2015
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Time Based, granted | shares 1,368,700
Time Based, vested | shares 0
Time Based, forfeited | shares (280,532)
Time Based, issued and unvested ending balance | shares 1,088,168
Weighted Average Grant Date Fair Value Per Share, granted | $ / shares $ 5.97
Weighted Average Grant Date Fair Value Per Share, vested | $ / shares 0
Weighted Average Grant Date Fair Value Per Share, forfeited | $ / shares 6.01
Weighted Average Grant Date Fair Value Per Share, issued and unvested ending balance | $ / shares $ 5.96