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Commitments and Contingencies (Details Narrative) - USD ($)
12 Months Ended
Dec. 30, 2017
Dec. 31, 2016
Jan. 02, 2016
Lease      
Rent expense $ 729,000 $ 606,000 $ 536,000
Deferred rent 492,000 380,000  
Royalty      
Royalty expense including license maintenance fees 992,000 $ 773,000 $ 583,000
Minimum [Member]      
Lease      
Monthly lease payment 1,500    
Royalty      
Minimum yearly royalty payments 10,000    
Maximum [Member]      
Lease      
Monthly lease payment 24,000    
Royalty      
Minimum yearly royalty payments $ 83,000