General form of registration statement for all companies including face-amount certificate companies

SCHEDULE I - Parent Company Information - Condensed Statements of Cash Flows (Details)

v3.8.0.1
SCHEDULE I - Parent Company Information - Condensed Statements of Cash Flows (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
Operating activities              
Net income $ 23,255 $ 14,219 $ 54,812 $ 26,332 $ 43,039 $ 26,807 $ 15,098
Adjustments to reconcile net income to net cash provided by operating activities:              
Net cash provided by operating activities         89,456 20,380 43,594
Investing activities              
Net cash used in investing activities         (74,648) (45,021) (39,069)
Financing activities              
Proceeds from exercise of stock options     4,327 338 284 40 658
Cash dividends         (225,000) 0 0
Net cash used in financing activities         (14,675) 24,680 (4,421)
Net (decrease) increase in cash and cash equivalents     116 31 133 39 104
Cash and cash equivalents, beginning of the period     451 318 318 279 175
Cash and cash equivalents, end of the period $ 567 $ 349 567 349 451 318 279
Parent Company [Member]              
Operating activities              
Net income         43,039 26,807 15,098
Adjustments to reconcile net income to net cash provided by operating activities:              
Net income from subsidiaries         (43,039) (26,807) (15,098)
Net cash provided by operating activities         0 0 0
Investing activities              
Investment in subsidiary         (284) (40) (954)
Distribution from subsidiary         225,000 0 0
Net cash used in investing activities         224,716 (40) (954)
Financing activities              
Proceeds from exercise of stock options         284 40 954
Cash dividends         (225,000) 0 0
Net cash used in financing activities         (224,716) 40 954
Net (decrease) increase in cash and cash equivalents         0 0 0
Cash and cash equivalents, beginning of the period     $ 0 $ 0 0 0 0
Cash and cash equivalents, end of the period         $ 0 $ 0 $ 0