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Summary of Status of Nonvested Shares (Detail) - Restricted Stock and Restricted Stock Units - $ / shares
12 Months Ended
Dec. 31, 2016
Dec. 26, 2015
Dec. 27, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Outstanding at beginning of the period, Shares 9,588,889 10,708,372 10,207,546
Granted, Shares 10,099,481 2,886,640 5,809,821
Vested, Share (3,521,765) (3,370,569) (4,179,789)
Forfeited, Share (3,418,814) (635,554) (1,129,206)
Outstanding at end of the period, shares 12,747,791 9,588,889 10,708,372
Outstanding at beginning of the period, Weighted Average Grant-Date Price $ 6.07 $ 4.65 $ 4.76
Granted, Weighted Average Grant-Date Price 3.53 9.43 4.33
Vested, Weighted Average Grant-Date Price 5.31 4.46 4.75
Forfeited, Weighted Average Grant-Date Price 4.51 5.94 3.65
Outstanding at end of the period, Weighted Average Grant-Date Price $ 4.41 $ 6.07 $ 4.65