Long-Term Debt (Narrative)(Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 27, 2015 |
Dec. 28, 2014 |
|
| Credit facility maximum borrowing capacity | $ 25,000 | |
| Long-term debt | $ 0 | $ 8,750 |
| Credit facility maturity date | Oct. 30, 2020 | |
| Line of Credit Facility Additional Borrowing Capacity | $ 25,000 | |
| Revolving Credit Facility [Member] | ||
| Letters of credit borrowing capacity | $ 5,000 | |
| Revolving Credit Facility [Member] | Federal Funds Rate [Member] | ||
| Basis spread on variable rate | 0.50% | |
| Revolving Credit Facility [Member] | Base Rate [Member] | ||
| Basis spread on variable rate | 1.00% |