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8. Long-Term Debt (Details) - USD ($)
3 Months Ended
Apr. 29, 2018
Apr. 30, 2017
8. Long-Term Debt (Details) [Line Items]    
Repayments of Long-term Debt $ 11,893,000 $ 1,464,000
Unsecured Debt [Member] | Unsecured Term Loan [Member]    
8. Long-Term Debt (Details) [Line Items]    
Repayments of Long-term Debt 10,000,000  
Unsecured Debt [Member] | New Unsecured Term Loan [Member]    
8. Long-Term Debt (Details) [Line Items]    
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net 101,000  
Secured Debt [Member]    
8. Long-Term Debt (Details) [Line Items]    
Interest and Debt Expense $ 6,000