Annual report [Section 13 and 15(d), not S-K Item 405]

Note 6 - Financing Arrangements (Details Textual)

v3.26.1
Note 6 - Financing Arrangements (Details Textual)
12 Months Ended
Jul. 19, 2024
USD ($)
Mar. 29, 2026
USD ($)
Mar. 30, 2025
USD ($)
Jun. 29, 2025
USD ($)
Jun. 23, 2025
USD ($)
Feb. 10, 2025
USD ($)
Jan. 02, 2025
USD ($)
Mar. 31, 2024
USD ($)
Selling, General and Administrative Expense   $ 18,979,000 $ 18,690,000          
Long-Term Line of Credit   9,500,000 11,900,000          
Letters of Credit Outstanding, Amount     0         $ 0
Line of Credit Facility, Remaining Borrowing Capacity   12,500,000 13,800,000          
Long-Term Debt, Current Maturities   1,991,000 1,990,000          
Accounts Receivable, after Allowance for Credit Loss, Current   18,900,000 24,500,000          
Accounts Receivable, Allowance for Credit Loss, Current   1,500,000 1,700,000          
Long-Term Debt, Maturity, Year One   2,000,000            
Long-Term Debt, Maturity, Year Two   2,200,000            
Long-Term Debt, Maturity, Year Three   500,000            
Long-Term Debt, Maturity, Year Four   9,500,000            
Long-Term Debt, Maturity, Year Five   0            
Receivable Due from Factor [Member]                
Accounts Receivable, after Allowance for Credit Loss, Current   $ 16,300,000 21,900,000          
Revolving Credit Facility [Member]                
Line of Credit Facility, Maximum Borrowing Capacity $ 40,000,000              
Revolving Credit Facility [Member] | Prime Rate [Member]                
Debt Instrument Basis Spread Below Variable Rate 0.50%              
Debt Instrument, Interest Received on Daily Negative Balances, Basis Spread Below Variable Rate 2.00%              
Revolving Credit Facility [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]                
Debt Instrument, Basis Spread on Variable Rate 1.60%              
Debt Instrument, Interest Rate, Effective Percentage   5.30%            
Letter of Credit [Member]                
Line of Credit Facility, Maximum Borrowing Capacity $ 1,500,000              
Term Loan [Member]                
Long-Term Debt   $ 4,700,000            
Debt Instrument, Face Amount $ 8,000,000     $ 8,000,000        
Debt Instrument, Interest Rate, Effective Percentage   5.90%            
Debt Instrument, Covenant, Excess Availability         $ 4,000,000 $ 7,500,000 $ 7,000,000  
Debt Instrument, Covenant, Excess Availability Basis Spread Value         $ 1,000,000      
Long-Term Debt, Current Maturities   $ 2,000,000            
Debt Instrument, Number of Monthly Installments 48              
Term Loan [Member] | Secured Overnight Financing Rate (SOFR) [Member]                
Debt Instrument, Basis Spread on Variable Rate 2.25%              
Factoring Agreements [Member]                
Long-Term Debt   0            
Selling, General and Administrative Expense   $ 335,000 $ 386,000