Summary of Organization and Significant Accounting Policies - Schedule of Carrying Value and Fair Value of Financial Instruments (Parenthetical) (Detail) - USD ($) $ in Millions |
Mar. 28, 2015 |
Dec. 27, 2014 |
|---|---|---|
| Debt Instrument Fair Value Carrying Value [Abstract] | ||
| Current portion of debt | $ 5.3 | $ 5.3 |