Income Taxes (Summary of Differences Between Provision for Income Taxes) (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | 12 Months Ended | ||||
|---|---|---|---|---|---|---|---|
Sep. 28, 2017 |
Sep. 29, 2016 |
Sep. 28, 2017 |
Sep. 29, 2016 |
Dec. 29, 2016 |
Dec. 31, 2015 |
Dec. 25, 2014 |
|
| Income Taxes | |||||||
| Computed "expected" provision at statutory rate | $ 19,080 | $ 15,052 | $ 8,656 | ||||
| State income taxes, net of federal income tax benefit | 1,073 | 1,594 | 801 | ||||
| Non-qualified option holder dividend equivalent | (7,877) | 0 | 0 | ||||
| Other | (4) | 113 | 96 | ||||
| Total permanent differences | (7,881) | 113 | 96 | ||||
| Other, net | (798) | (560) | 81 | ||||
| Provision for income taxes | $ 2,731 | $ 7,949 | $ 13,739 | $ 15,312 | $ 11,474 | $ 16,199 | $ 9,634 |