Summary of Organization and Significant Accounting Policies - Estimated Amortization Expense for Intangible Assets (Detail) - USD ($) $ in Thousands |
Mar. 28, 2015 |
Dec. 27, 2014 |
Dec. 28, 2013 |
|---|---|---|---|
| Accounting Policies [Abstract] | |||
| 2015 | $ 3,105 | ||
| 2016 | 1,675 | ||
| 2017 | 956 | ||
| 2018 | 956 | ||
| 2019 | 956 | ||
| Thereafter | 9,999 | ||
| Total | $ 16,891 | $ 17,647 | $ 15,147 |