Leases (Minimum and Contingent Rent Exepense)(Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 27, 2015 |
Dec. 28, 2014 |
Dec. 29, 2013 |
|
| Operating Leased Assets [Line Items] | |||
| Total minimum and contingent rent | $ 15,303 | $ 12,748 | $ 10,655 |
| Related Parties [Member] | |||
| Operating Leased Assets [Line Items] | |||
| Miminum rent—related parties | 1,901 | 1,969 | 1,930 |
| Contingent rent—related parties | 646 | 600 | 543 |
| Total minimum and contingent rent | 2,547 | 2,569 | 2,473 |
| Unrelated Parties [Member] | |||
| Operating Leased Assets [Line Items] | |||
| Miminum rent—related parties | 12,401 | 9,888 | 7,945 |
| Contingent rent—related parties | 355 | 291 | 237 |
| Total minimum and contingent rent | $ 12,756 | $ 10,179 | $ 8,182 |