Quarterly report pursuant to Section 13 or 15(d)

Note 1 - Summary of Significant Accounting Policies (Details Textual)

v3.20.2
Note 1 - Summary of Significant Accounting Policies (Details Textual)
3 Months Ended
Jun. 28, 2020
USD ($)
Jun. 30, 2019
USD ($)
Mar. 29, 2020
USD ($)
Accounts Receivable, after Allowance for Credit Loss, Current, Total $ 15,100,000   $ 17,800,000
Accounts Receivable, Allowance for Credit Loss, Current 587,000   530,000
Contract with Customer, Liability, Current $ 524,000   155,000
Number of Operating Segments 1    
Cost of Goods and Services Sold, Total $ 11,182,000 $ 11,391,000  
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions 13,000 11,000  
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense, Total $ 17,000 26,000  
Tax Adjustments, Settlements, and Unusual Provisions   (232,000)  
Interest Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability   (78,000)  
Income Tax Expense (Benefit), Reserve for Unrecognized Tax Benefits, Net Discrete Charge   2,000  
Minimum [Member]      
Property, Plant and Equipment, Useful Life (Year) 3 years    
Finite-Lived Intangible Asset, Useful Life (Year) 5 years    
Maximum [Member]      
Property, Plant and Equipment, Useful Life (Year) 8 years    
Finite-Lived Intangible Asset, Useful Life (Year) 20 years    
Royalty [Member]      
Cost of Goods and Services Sold, Total $ 1,200,000 881,000  
Receivable Due from Factor [Member]      
Accounts Receivable, after Allowance for Credit Loss, Current, Total 14,500,000   $ 17,100,000
Negative Balance Outstanding Under Revolving Line of Credit [Member]      
Accounts Receivable, after Allowance for Credit Loss, Current, Total 6,200,000    
Receivable from Factor, and Negative Balance on Revolving Line of Credit [Member]      
Accounts Receivable, after Allowance for Credit Loss, Current, Total 20,700,000    
Selling, General and Administrative Expenses [Member]      
Advertising Expense $ 345,000 $ 284,000