| Schedule of Net sales by major product category | 
 
		
			
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						Fiscal Year Ended 
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				| 
					 
						  
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				 | 
				
					 
						December 28, 2017 
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						December 29, 2016 
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						December 31, 2015 
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				 | 
				
					 
						     
				 | 
				
					 
						  
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						% of 
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				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						     
				 | 
				
					 
						% of 
				 | 
				
					 
						     
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				 | 
				
					 
						     
				 | 
				
					 
						% of 
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				| 
					 
						Product Category 
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				 | 
				
					 
						Net Sales 
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				 | 
				
					 
						Net Sales 
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				 | 
				
					 
						Net Sales 
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				 | 
				
					 
						Net Sales 
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						Net Sales 
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						Net Sales 
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				| 
					 
						Tile 
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						$ 
				 | 
				
					 
						 419,745 
				 | 
				
					 
						  
				 | 
				
					 
						 30 
				 | 
				
					 
						%   
				 | 
				
					 
						$ 
				 | 
				
					 
						 325,433 
				 | 
				
					 
						  
				 | 
				
					 
						 31 
				 | 
				
					 
						%   
				 | 
				
					 
						$ 
				 | 
				
					 
						 244,902 
				 | 
				
					 
						  
				 | 
				
					 
						 31 
				 | 
				
					 
						% 
				 | 
			 
			
				| 
					 
						Decorative Accessories 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 257,684 
				 | 
				
					 
						  
				 | 
				
					 
						 19 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 188,371 
				 | 
				
					 
						  
				 | 
				
					 
						 18 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 138,442 
				 | 
				
					 
						  
				 | 
				
					 
						 18 
				 | 
				
					 
						  
				 | 
			 
			
				| 
					 
						Accessories (Installation Materials and Tools) 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 217,427 
				 | 
				
					 
						  
				 | 
				
					 
						 16 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 165,330 
				 | 
				
					 
						  
				 | 
				
					 
						 16 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 124,162 
				 | 
				
					 
						  
				 | 
				
					 
						 16 
				 | 
				
					 
						  
				 | 
			 
			
				| 
					 
						Laminate / Luxury Vinyl Plank 
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				 | 
				
					 
						  
				 | 
				
					 
						 208,238 
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				 | 
				
					 
						 15 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 131,447 
				 | 
				
					 
						  
				 | 
				
					 
						 12 
				 | 
				
					 
						  
				 | 
				
					 
						  
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						 77,586 
				 | 
				
					 
						  
				 | 
				
					 
						 10 
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				 | 
			 
			
				| 
					 
						Wood 
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				 | 
				
					 
						  
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						 167,152 
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						 12 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 142,751 
				 | 
				
					 
						  
				 | 
				
					 
						 14 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 116,999 
				 | 
				
					 
						  
				 | 
				
					 
						 15 
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				| 
					 
						Natural Stone 
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				 | 
				
					 
						  
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						 104,670 
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						  8 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 90,866 
				 | 
				
					 
						  
				 | 
				
					 
						  9 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 78,294 
				 | 
				
					 
						  
				 | 
				
					 
						 10 
				 | 
				
					 
						  
				 | 
			 
			
				| 
					 
						Delivery and Other 
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				 | 
				
					 
						  
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						 9,851 
				 | 
				
					 
						  
				 | 
				
					 
						  — 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 6,561 
				 | 
				
					 
						  
				 | 
				
					 
						  — 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						 3,627 
				 | 
				
					 
						  
				 | 
				
					 
						  — 
				 | 
				
					 
						  
				 | 
			 
			
				| 
					 
						Total 
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				 | 
				
					 
						$ 
				 | 
				
					 
						 1,384,767 
				 | 
				
					 
						  
				 | 
				
					 
						 100 
				 | 
				
					 
						%   
				 | 
				
					 
						$ 
				 | 
				
					 
						 1,050,759 
				 | 
				
					 
						  
				 | 
				
					 
						 100 
				 | 
				
					 
						%   
				 | 
				
					 
						$ 
				 | 
				
					 
						 784,012 
				 | 
				
					 
						  
				 | 
				
					 
						 100 
				 | 
				
					 
						% 
				 | 
			 
		  
		
			 
		 
   
 |