Quarterly report pursuant to Section 13 or 15(d)

Note 6 - Borrowings (Details Textual)

v3.10.0.1
Note 6 - Borrowings (Details Textual) - The Facility [Member]
$ in Millions
Oct. 21, 2018
USD ($)
Dec. 31, 2018
USD ($)
Dec. 21, 2018
USD ($)
Jun. 30, 2018
USD ($)
Revolving Credit Facility [Member]        
Line of Credit Facility, Maximum Borrowing Capacity     $ 165.0  
Debt Covenant, Fixed Charge Coverage Ratio, Maximum Unused Availability $ 18.5      
Debt Instrument, Covenant, Minimum Fixed Charge Coverage Ratio 1      
Debt Issuance Costs, Net, Total $ 0.6      
Line of Credit Facility, Remaining Borrowing Capacity   $ 148.7   $ 108.8
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] | Federal Funds Effective 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   $ 6.2   $ 6.2