Annual report pursuant to Section 13 and 15(d)

Note 11 - Debt (Details Textual)

v3.21.2
Note 11 - Debt (Details Textual) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Dec. 21, 2018
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2019
Dec. 21, 2019
Proceeds from Long-term Lines of Credit         $ 0 $ 100,000 $ 16,000  
Long-term Line of Credit, Total     $ 50,000   0 50,000    
Revolving Credit Facility [Member] | The Facility [Member]                
Line of Credit Facility, Maximum Borrowing Capacity $ 165,000              
Debt Issuance Costs, Net, Total               $ 600
Proceeds from Long-term Lines of Credit       $ 100,000        
Repayments of Long-term Lines of Credit   $ 50,000 50,000          
Long-term Line of Credit, Total     50,000     50,000    
Interest Expense, Debt, Total         300 500    
Debt Covenant, Fixed Charge Coverage Ratio, Maximum Unused Availability $ 18,500              
Debt Instrument, Covenant, Minimum Fixed Charge Coverage Ratio 1.0              
Line of Credit Facility, Remaining Borrowing Capacity     58,900   75,700 58,900    
Revolving Credit Facility [Member] | The Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]                
Debt Instrument, Basis Spread on Variable Rate 1.00%              
Revolving Credit Facility [Member] | The Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]                
Debt Instrument, Basis Spread on Variable Rate 1.50%              
Revolving Credit Facility [Member] | The Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]                
Debt Instrument, Basis Spread on Variable Rate 2.00%              
Revolving Credit Facility [Member] | The Facility [Member] | Fed Funds Effective Rate Overnight Index Swap Rate [Member]                
Debt Instrument, Basis Spread on Variable Rate 0.50%              
Revolving Credit Facility [Member] | The Facility [Member] | Additional Margin on Variable Rate Option [Member] | Minimum [Member]                
Debt Instrument, Basis Spread on Variable Rate 0.50%              
Revolving Credit Facility [Member] | The Facility [Member] | Additional Margin on Variable Rate Option [Member] | Maximum [Member]                
Debt Instrument, Basis Spread on Variable Rate 1.00%              
Standby Letters of Credit [Member] | The Facility [Member]                
Letters of Credit Outstanding, Amount     $ 5,800   $ 5,000 $ 5,800