Quarterly report pursuant to Section 13 or 15(d)

Note 10 - Debt (Details Textual)

v3.20.2
Note 10 - Debt (Details Textual) - The Facility [Member] - USD ($)
$ in Millions
1 Months Ended 3 Months Ended
Dec. 21, 2018
Mar. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Sep. 30, 2019
Revolving Credit Facility [Member]          
Line of Credit Facility, Maximum Borrowing Capacity $ 165.0        
Debt Issuance Costs, Net, Total 0.6        
Proceeds from Long-term Lines of Credit   $ 100.0      
Repayments of Long-term Lines of Credit     $ 50.0 $ 50.0  
Interest Expense, Debt, Total     0.3   $ 0.1
Debt Covenant, Fixed Charge Coverage Ratio, Maximum Unused Availability $ 18.5        
Debt Instrument, Covenant, Minimum Fixed Charge Coverage Ratio 1.0        
Line of Credit Facility, Remaining Borrowing Capacity     104.5 58.9  
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] | Additional Margin on Variable Rate Option [Member] | Minimum [Member]          
Debt Instrument, Basis Spread on Variable Rate 0.50%        
Revolving Credit 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]          
Letters of Credit Outstanding, Amount     $ 5.0 $ 5.8