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

Summary of Significant Accounting Policies - Segment (Details)

v3.7.0.1
Summary of Significant Accounting Policies - Segment (Details)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 30, 2017
USD ($)
segment
Mar. 31, 2016
USD ($)
Dec. 29, 2016
USD ($)
segment
Dec. 31, 2015
USD ($)
Dec. 25, 2014
USD ($)
Revenue from External Customer [Line Items]          
Number of reportable segments | segment 1   1    
Net sales $ 307,296 $ 235,301 $ 1,050,759 $ 784,012 $ 584,588
Net sales (as a percentage)     100.00% 100.00% 100.00%
Tile          
Revenue from External Customer [Line Items]          
Net sales     $ 325,433 $ 244,902 $ 174,271
Net sales (as a percentage)     31.00% 31.00% 30.00%
Decorative Accessories          
Revenue from External Customer [Line Items]          
Net sales     $ 188,371 $ 138,442 $ 98,991
Net sales (as a percentage)     18.00% 18.00% 16.00%
Accessories Installation Materials and Tools          
Revenue from External Customer [Line Items]          
Net sales     $ 165,330 $ 124,162 $ 91,122
Net sales (as a percentage)     16.00% 16.00% 16.00%
Wood          
Revenue from External Customer [Line Items]          
Net sales     $ 142,751 $ 116,999 $ 90,752
Net sales (as a percentage)     14.00% 15.00% 16.00%
Laminate Luxury Vinyl Plank          
Revenue from External Customer [Line Items]          
Net sales     $ 131,447 $ 77,586 $ 61,817
Net sales (as a percentage)     12.00% 10.00% 11.00%
Natural Stone          
Revenue from External Customer [Line Items]          
Net sales     $ 90,866 $ 78,294 $ 65,008
Net sales (as a percentage)     9.00% 10.00% 11.00%
Delivery and Other          
Revenue from External Customer [Line Items]          
Net sales     $ 6,561 $ 3,627 $ 2,627
Net sales (as a percentage)     0.00% 0.00% 0.00%