SCHEDULE I - Parent Company Information - Condensed Statements of Income (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 |
|
| Condensed Financial Statements, Captions [Line Items] | |||||||
| Income before income taxes | $ 25,986 | $ 22,168 | $ 68,551 | $ 41,644 | $ 54,513 | $ 43,006 | $ 24,732 |
| Benefit for income taxes | 2,731 | 7,949 | 13,739 | 15,312 | 11,474 | 16,199 | 9,634 |
| Net income | $ 23,255 | $ 14,219 | $ 54,812 | $ 26,332 | 43,039 | 26,807 | 15,098 |
| Parent Company [Member] | |||||||
| Condensed Financial Statements, Captions [Line Items] | |||||||
| Net income from subsidiaries | 43,039 | 26,807 | 15,098 | ||||
| Income before income taxes | 43,039 | 26,807 | 15,098 | ||||
| Benefit for income taxes | 0 | 0 | 0 | ||||
| Net income | $ 43,039 | $ 26,807 | $ 15,098 | ||||