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

Unaudited Earnings Per Share Pro Forma for Dividend (Details)

v3.7.0.1
Unaudited Earnings Per Share Pro Forma for Dividend (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Mar. 30, 2017
Mar. 31, 2016
Dec. 29, 2016
Dec. 31, 2015
Dec. 25, 2014
Share price     $ 9.99    
Net income $ 11,128 $ 7,101 $ 43,039 $ 26,807 $ 15,098
Amount of dividends     225,000    
Excess of dividends over net income     $ (181,961)    
Number of shares required to be issued at $21.00 per share to pay excess of dividends over net income     8,664,810    
Basic weighted average shares outstanding 83,529,335 83,375,562 83,432,157 83,365,218 83,222,330
Pro forma basic weighted average shares outstanding     92,096,967    
Pro forma basic earnings per share     $ 0.47    
Dilutive weighted average shares outstanding 88,644,810 86,668,473 88,430,987 86,280,907 85,651,749
Pro forma dilutive weighted average shares outstanding     97,095,797    
Pro forma dilutive earnings per share     $ 0.44    
IPO | Class A Common Stock          
Share price     $ 21.00