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Note H - Debt (Details Textual)
$ in Thousands
12 Months Ended
Apr. 01, 2024
USD ($)
Apr. 17, 2020
USD ($)
Jun. 30, 2024
USD ($)
Jun. 30, 2021
USD ($)
Jul. 01, 2025
USD ($)
Jan. 01, 2025
May 31, 2024
USD ($)
Jun. 30, 2023
USD ($)
Jun. 29, 2018
USD ($)
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Bank of Montreal [Member]                  
Derivative, Notional Amount     $ 9,500         $ 20,000  
Katsa Oy [Member]                  
Business Acquisition, Transaction Costs     600       $ 400    
Line of Credit [Member]                  
Line of Credit Facility, Maximum Borrowing Capacity     $ 1,053         $ 1,057  
Debt, Weighted Average Interest Rate     5.14%         5.10%  
Paycheck Protection Program CARES Act [Member] | Promissory Note [Member]                  
Proceeds from Issuance of Long-Term Debt   $ 8,200              
Gain (Loss) on Extinguishment of Debt       $ 8,200          
BMO [Member] | The 2018 Credit Agreement [Member]                  
Debt Instrument, Percentage of Equity Interest in Domestic Subsidiaries Pledged     100.00%            
Debt Instrument, Percentage of Equity Interest in Foreign Subsidiaries Pledged     65.00%            
Debt Instrument, Debt Default, Percentage of Letter of Credit Obligations Required to Cash Collateralize     105.00%            
BMO [Member] | The 2018 Credit Agreement [Member] | Term Loan [Member]                  
Debt Agreement, Maximum Borrowing Capacity     $ 20,000            
Debt Instrument, Periodic Payment, Total     $ 500            
Debt Instrument, Interest Rate During Period     6.97%            
BMO [Member] | The 2018 Credit Agreement [Member] | Revolving Credit Facility [Member]                  
Debt Agreement, Maximum Borrowing Capacity                 $ 35,000
Line of Credit Facility, Maximum Borrowing Capacity                 $ 50,000
Debt Instrument, Interest Rate During Period     5.67%            
Line of Credit Facility, Current Borrowing Capacity     $ 42,813            
Line of Credit Facility, Remaining Borrowing Capacity     26,525            
BMO [Member] | The 2018 Credit Agreement [Member] | Revolving Credit Facility [Member] | Maximum [Member]                  
Debt Instrument, Covenant, Maximum Cash Dividends $ 5,000                
BMO [Member] | The Tenth Amendment [Member]                  
Debt Instrument, Covenant, Maximum Cash Dividends $ 5,000                
BMO [Member] | The Tenth Amendment [Member] | Term Loan [Member] | Maximum [Member]                  
Debt Instrument, Basis Spread on Variable Rate 3.625%                
BMO [Member] | The Tenth Amendment [Member] | Term Loan [Member] | Minimum [Member]                  
Debt Instrument, Basis Spread on Variable Rate 2.125%                
BMO [Member] | The Tenth Amendment [Member] | Unused Revolving Credit Commitment [Member] | Maximum [Member]                  
Debt Instrument, Basis Spread on Variable Rate 0.30%                
BMO [Member] | The Tenth Amendment [Member] | Unused Revolving Credit Commitment [Member] | Minimum [Member]                  
Debt Instrument, Basis Spread on Variable Rate 0.15%                
BMO [Member] | The Tenth Amendment [Member] | Revolving Credit Facility [Member]                  
Line of Credit Facility, Maximum Borrowing Capacity $ 45,000                
Debt Instrument, Borrowing Base, Percentage of Receivables 85.00%                
Debt Instrument, Borrowing Base Two $ 35,000                
Debt Instrument, Borrowing Base, Percentage of Receivables Two 60.00%                
BMO [Member] | The Tenth Amendment [Member] | Revolving Credit Facility [Member] | Forecast [Member]                  
Debt Instrument, Borrowing Base Two         $ 32,500        
Debt Instrument, Borrowing Base, Percentage of Receivables Two         50.00% 55.00%      
BMO [Member] | The Tenth Amendment [Member] | Revolving Credit Facility [Member] | Maximum [Member]                  
Debt Instrument, Basis Spread on Variable Rate 3.50%                
BMO [Member] | The Tenth Amendment [Member] | Revolving Credit Facility [Member] | Minimum [Member]                  
Debt Instrument, Basis Spread on Variable Rate 2.00%                
Debt Instrument, Borrowing Base, Percentage of Receivables 50.00%                
Debt Instrument, Borrowing Base $ 30,000                
BMO [Member] | The Ninth Amendment [Member]                  
Debt Instrument, Covenant, Maximum Cash Dividends $ 3,000                
BMO [Member] | The Ninth Amendment [Member] | Term Loan [Member]                  
Debt Instrument, Covenant, Minimum Tangible Net Worth Plus Half of Net Income     $ 100,000            
BMO [Member] | The Ninth Amendment [Member] | Term Loan [Member] | Maximum [Member]                  
Debt Instrument, Basis Spread on Variable Rate 2.875%   3.625%            
BMO [Member] | The Ninth Amendment [Member] | Term Loan [Member] | Minimum [Member]                  
Debt Instrument, Basis Spread on Variable Rate 1.375%   2.125%            
BMO [Member] | The Ninth Amendment [Member] | Unused Revolving Credit Commitment [Member] | Maximum [Member]                  
Debt Instrument, Basis Spread on Variable Rate 0.15%   0.30%            
BMO [Member] | The Ninth Amendment [Member] | Unused Revolving Credit Commitment [Member] | Minimum [Member]                  
Debt Instrument, Basis Spread on Variable Rate 0.10%   0.15%            
BMO [Member] | The Ninth Amendment [Member] | Revolving Credit Facility [Member]                  
Line of Credit Facility, Maximum Borrowing Capacity $ 40,000                
BMO [Member] | The Ninth Amendment [Member] | Revolving Credit Facility [Member] | Maximum [Member]                  
Debt Instrument, Basis Spread on Variable Rate 2.75%   3.50%            
Fixed Charge Coverage Ratio     1.1            
BMO [Member] | The Ninth Amendment [Member] | Revolving Credit Facility [Member] | Minimum [Member]                  
Debt Instrument, Basis Spread on Variable Rate 1.25%   2.00%            
Total Funded Debt To EBITDA Allowable Ratio     3.5