Quarterly report pursuant to Section 13 or 15(d)

Note 11 - Credit Agreement (Details Textual)

v3.21.4
Note 11 - Credit Agreement (Details Textual) - The Facility [Member] - USD ($)
$ in Thousands
1 Months Ended 6 Months Ended
Jan. 26, 2022
Dec. 21, 2018
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2020
Dec. 31, 2021
Jun. 30, 2021
Revolving Credit Facility [Member]                
Line of Credit Facility, Maximum Borrowing Capacity   $ 165,000            
Debt Issuance Costs, Net, Total   600            
Line of Credit Facility, Remaining Borrowing Capacity             $ 102,200 $ 75,700
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             0 0
Interest Expense, Debt, Total           $ 400    
Debt Covenant, Fixed Charge Coverage Ratio, Maximum Unused Availability   $ 18,500            
Debt Instrument, Covenant, Minimum Fixed Charge Coverage Ratio   1,000,000.0            
Revolving Credit Facility [Member] | Subsequent Event [Member]                
Line of Credit Facility, Maximum Borrowing Capacity $ 125,000              
Debt Covenant, Fixed Charge Coverage Ratio, Maximum Unused Availability $ 14,000              
Debt Instrument, Covenant, Minimum Fixed Charge Coverage Ratio 1.0              
Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]                
Debt Instrument, Basis Spread on Variable Rate   1.00%            
Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]                
Debt Instrument, Basis Spread on Variable Rate   1.50%            
Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]                
Debt Instrument, Basis Spread on Variable Rate   2.00%            
Revolving Credit Facility [Member] | Fed Funds Effective Rate Overnight Index Swap Rate [Member]                
Debt Instrument, Basis Spread on Variable Rate   0.50%            
Revolving Credit Facility [Member] | Fed Funds Effective Rate Overnight Index Swap Rate [Member] | Subsequent Event [Member]                
Debt Instrument, Basis Spread on Variable Rate 0.50%              
Revolving Credit Facility [Member] | Additional Margin on Variable Rate Option (Adjusted Term Sofr Rate) [Member] | Minimum [Member]                
Debt Instrument, Basis Spread on Variable Rate   0.50%            
Revolving Credit Facility [Member] | Additional Margin on Variable Rate Option (Adjusted Term Sofr Rate) [Member] | Minimum [Member] | Subsequent Event [Member]                
Debt Instrument, Basis Spread on Variable Rate 1.25%              
Revolving Credit Facility [Member] | Additional Margin on Variable Rate Option (Adjusted Term Sofr Rate) [Member] | Maximum [Member]                
Debt Instrument, Basis Spread on Variable Rate   1.00%            
Revolving Credit Facility [Member] | Additional Margin on Variable Rate Option (Adjusted Term Sofr Rate) [Member] | Maximum [Member] | Subsequent Event [Member]                
Debt Instrument, Basis Spread on Variable Rate 2.00%              
Standby Letters of Credit [Member]                
Letters of Credit Outstanding, Amount             $ 4,000 $ 5,000