Debt - Summary of Activity for Deferred Financing Fees (Detail) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|
Mar. 28, 2015 |
Mar. 29, 2014 |
Dec. 27, 2014 |
Dec. 28, 2013 |
Dec. 29, 2012 |
|
| Deferred Finance Costs, Net [Abstract] | |||||
| Beginning balance | $ 17,215 | $ 11,485 | $ 11,485 | ||
| Loan origination fees | 4,048 | 6,309 | |||
| Amortization | (982) | (850) | (252) | $ (3,256) | $ (3,266) |
| Write off of deferred financing fees | (688) | ||||
| Ending balance | $ 19,593 | $ 16,944 | $ 17,215 | $ 11,485 | |