Quarterly report pursuant to Section 13 or 15(d)

Note 2 - Financing Arrangements (Details Textual)

v3.20.4
Note 2 - Financing Arrangements (Details Textual) - USD ($)
3 Months Ended 9 Months Ended
Apr. 19, 2020
Dec. 27, 2020
Dec. 29, 2019
Dec. 27, 2020
Dec. 29, 2019
Mar. 29, 2020
Selling, General and Administrative Expense, Total   $ 3,420,000 $ 3,416,000 $ 10,602,000 $ 10,344,000  
Long-term Line of Credit, Total   0   0    
Letters of Credit Outstanding, Amount   0   0    
Line of Credit Facility, Remaining Borrowing Capacity   26,000,000   26,000,000   $ 20,100,000
Proceeds from (Repayments of) Notes Payable, Total       1,964,000  
Notes Payable, Current, Total   1,440,000   1,440,000  
Paycheck Protection Program CARES Act [Member]            
Proceeds from (Repayments of) Notes Payable, Total $ 1,963,800          
Notes Payable, Current, Total   1,400,000   1,400,000    
Notes Payable, Noncurrent, Total   524,000   524,000    
Revolving Credit Facility [Member]            
Line of Credit Facility, Maximum Borrowing Capacity   $ 26,000,000   $ 26,000,000    
Long-term Line of Credit, Total           2,600,000
Letters of Credit Outstanding, Amount           $ 0
Revolving Credit Facility [Member] | Prime Rate [Member]            
Debt Instrument Basis Spread Below Variable Rate       0.50%    
Debt Instrument, Basis Spread on Variable Rate       2.00%    
Debt Instrument, Interest Rate, Effective Percentage   1.25%   1.25%    
Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]            
Debt Instrument, Basis Spread on Variable Rate       1.75%    
Debt Instrument, Interest Rate, Effective Percentage   1.90%   1.90%    
Letter of Credit [Member]            
Line of Credit Facility, Maximum Borrowing Capacity   $ 1,500,000   $ 1,500,000    
Factoring Fees [Member]            
Selling, General and Administrative Expense, Total   $ 79,000 $ 75,000 $ 209,000 $ 188,000