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Common Stock and Share-Based Compensation - Summary of Stock Options under Employee Equity Incentive Plan and Stock Option Plan for Non-Employee Directors (Detail)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 26, 2020
USD ($)
$ / shares
shares
Shares  
Outstanding at beginning of period | shares 315,678
Granted | shares 26,402
Forfeited | shares (2,595)
Exercised | shares (97,638)
Outstanding at end of period | shares 241,847
Exercisable at end of period | shares 53,638
Vested and expected to vest at end of period | shares 217,604
Weighted-Average Exercise Price  
Outstanding at beginning of period | $ / shares $ 186.53
Granted | $ / shares 393.54
Forfeited | $ / shares 242
Exercised | $ / shares 136.87
Outstanding at end of period | $ / shares 228.58
Exercisable at end of period | $ / shares 211.32
Vested and expected to vest at end of period | $ / shares $ 227.97
Weighted-Average Remaining Contractual Term  
Outstanding at end of period 5 years 11 months 4 days
Exercisable at end of period 5 years 1 month 28 days
Vested and expected to vest at end of period 5 years 10 months 28 days
Aggregate Intrinsic Value  
Outstanding at end of period | $ $ 190,176
Exercisable at end of period | $ 43,104
Vested and expected to vest at end of period | $ $ 171,246