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Note B - Summary of Significant Accounting Policies (Details Textual)
$ in Thousands
12 Months Ended
Mar. 28, 2021
USD ($)
Mar. 29, 2020
USD ($)
Cash Equivalents, at Carrying Value, Total $ 0 $ 0
Goodwill, Ending Balance 95 95
Intangible Assets, Net (Excluding Goodwill), Total 1,156 1,269
Goodwill, Impairment Loss 0 0
Amortization of Intangible Assets, Total 113 84
Long-term Debt, Total 146,831 146,140
Long-term Debt, Fair Value 154,420  
Contract with Customer, Liability, Excluding Cash Received [1] $ 1,773 $ 1,917
Number of Major Branded Customer 3 3
Maximum Contributions to Advertising Fund Percentage of Net Sales   2.00%
Advertising Expense $ 1,296 $ 2,177
Entity Operated Units [Member]    
Advertising Expense $ 72 $ 145
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Branded Product Customer A [Member]    
Concentration Risk, Percentage 19.00% 24.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Branded Product Customer B [Member]    
Concentration Risk, Percentage 13.00% 11.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Branded Product Customer C [Member]    
Concentration Risk, Percentage 7.00% 10.00%
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Branded Product Customer A [Member]    
Concentration Risk, Percentage 9.00%  
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Branded Product Customer B [Member]    
Concentration Risk, Percentage   12.00%
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | One Retail Licensee [Member]    
Concentration Risk, Percentage 39.00% 24.00%
Cost of Goods and Service, Product and Service Benchmark [Member] | Supplier Concentration Risk [Member] | Primary Supplier of Hot Dogs [Member]    
Concentration Risk, Percentage 92.00% 92.00%
Cost of Goods and Service, Product and Service Benchmark [Member] | Supplier Concentration Risk [Member] | Distributor of Product to Company-owned Restaurants [Member]    
Concentration Risk, Percentage 6.00% 5.00%
Other Assets [Member]    
Deferred Rent Receivables, Net, Noncurrent, Total $ 34 $ 32
Deferred Franchise Fees [Member]    
Contract with Customer, Liability, Excluding Cash Received 237 230
Other Liabilities [Member]    
Contract with Customer, Liability, Excluding Cash Received $ 1,536 $ 1,687
[1] Deferred franchise fees of $237 and $1,536 are included in Deferred franchise fees – current and long term as of March 28, 2021, respectively and $230 and $1,687 as of March 29, 2020, respectively.