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Stock-Based Compensation - Schedule of Restricted Stock Activity (Detail) - Restricted Shares [Member]
3 Months Ended
Apr. 01, 2017
$ / shares
shares
Unvested Restricted Stock:  
Balance at beginning of fiscal year | shares 551,511
Granted | shares 0
Vested | shares (69,585)
Forfeited | shares 0
Balance at end of period | shares 481,926
Vested Restricted Stock:  
Balance at beginning of fiscal year | shares 3,866,430
Vested | shares 69,585
Repurchased | shares 0
Balance at end of period | shares 3,936,015
Weighted Average Grant Date Fair value per Share  
Balance at beginning of fiscal year (in dollars per share) | $ / shares $ 5.99
Granted (in dollars per share) | $ / shares 0
Vested (in dollars per share) | $ / shares 5.62
Forfeited (in dollars per share) | $ / shares 0
Balance at end of period (in dollars per share) | $ / shares 6.05
Vested Restricted Shares (per share)  
Balance, beginning of period (per share) | $ / shares 2.05
Vested (in dollars per share) | $ / shares 5.62
Repurchased (per share) | $ / shares 0
Balance, end of period (per share) | $ / shares $ 2.11