Leasing Arrangements - Additional Information (Detail) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 27, 2014 |
Dec. 28, 2013 |
Dec. 29, 2012 |
|
| Leases [Abstract] | |||
| Rent expense, including short-term rentals | $ 5.5 | $ 4.0 | $ 3.5 |
| Royalty expense recorded in cost of revenue | $ 9.0 | $ 4.5 | $ 3.9 |