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Stockholders' Equity - Summary of Roll Forward of Restricted Stock Activity Pursuant to the 2010 and 2013 Stock Plan (Parenthetical) (Detail)
Mar. 31, 2016
shares
2010 and 2013 Stock Incentive Plans [Member] | Unvested Restricted Stock [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Shares remaining from early exercise of stock options 4,949