Employee Long Term Incentive Plan - Summary of Information for Class D Unit Interests (Detail) - Class D Units [Member] - $ / shares
shares in Thousands |
12 Months Ended |
Dec. 27, 2014 |
Dec. 28, 2013 |
Dec. 29, 2012 |
| Time-Vesting Interests [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Number of units, Beginning balance |
1,819
|
|
|
| Number of units, Granted |
410
|
|
|
| Number of units, Vested |
(1,070)
|
|
|
| Number of units, Cancelled |
(280)
|
|
|
| Number of units, Ending balance |
879
|
1,819
|
|
| Weighted average grant-date fair value, Beginning balance |
$ 2,929
|
|
|
| Weighted average grant-date fair value, Granted |
1,368
|
$ 2,786
|
$ 3,761
|
| Weighted average grant-date fair value, Vested |
3,553
|
|
|
| Weighted average grant-date fair value, Cancelled |
3,938
|
|
|
| Weighted average grant-date fair value, Ending balance |
$ 2,374
|
$ 2,929
|
|
| Performance-Vesting Interests [Member] |
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
| Number of units, Beginning balance |
4,877
|
|
|
| Number of units, Granted |
533
|
|
|
| Number of units, Cancelled |
(48)
|
|
|
| Number of units, Ending balance |
5,362
|
4,877
|
|
| Weighted average grant-date fair value, Beginning balance |
$ 2,928
|
|
|
| Weighted average grant-date fair value, Granted |
1,956
|
|
|
| Weighted average grant-date fair value, Cancelled |
1,388
|
|
|
| Weighted average grant-date fair value, Ending balance |
$ 2,845
|
$ 2,928
|
|