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Subsequent Events (Details) - USD ($)
3 Months Ended
Apr. 29, 2019
Apr. 25, 2019
Apr. 24, 2019
Mar. 31, 2019
Subsequent Event [Line Items]        
Impairment of intangible assets       $ 0
Amendment to Loan and Security Agreement [Member] | Subsequent Event [Member]        
Subsequent Event [Line Items]        
Amendment fee $ 600,000      
Sale of UK Subsidiary and Certain Assets [Member] | Loan and Security Agreement [Member] | Subsequent Event [Member]        
Subsequent Event [Line Items]        
Cash proceeds from sale of subsidiary     $ 4,000,000  
Payments for principal, interest and fees     $ 1,700,000  
Sale of UK Subsidiary and Certain Assets [Member] | Amendment to Loan and Security Agreement [Member] | Subsequent Event [Member]        
Subsequent Event [Line Items]        
Payments for principal, interest and fees 1,700,000      
Sale of the Japanese Subsidiary and Certain Assets [Member] | Loan and Security Agreement [Member] | Subsequent Event [Member]        
Subsequent Event [Line Items]        
Cash proceeds from sale of subsidiary   $ 3,000,000    
Payments for principal, interest and fees   $ 1,400,000    
Sale of the Japanese Subsidiary and Certain Assets [Member] | Amendment to Loan and Security Agreement [Member] | Subsequent Event [Member]        
Subsequent Event [Line Items]        
Payments for principal, interest and fees $ 1,400,000