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Summary of Restricted Stock Grant Activity (Detail) - Restricted Stock - shares
3 Months Ended
Mar. 12, 2015
Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Beginning Balance   754,605
Granted 81,352 0
Exercised   0
Options forfeited/cancelled   0
Ending Balance   754,605