Quarterly report pursuant to Section 13 or 15(d)

Note 10 - Debt (Details Textual)

v3.21.1
Note 10 - Debt (Details Textual) - USD ($)
$ in Thousands
1 Months Ended 9 Months Ended
Dec. 21, 2018
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Mar. 31, 2021
Mar. 31, 2020
Proceeds from Long-term Lines of Credit         $ 0 $ 100,000
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   50,000  
Interest Expense, Debt, Total         400 $ 200
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   78,300  
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