Quarterly report pursuant to Section 13 or 15(d)

Note 2 - Long-term Debt (Details Textual)

v3.19.2
Note 2 - Long-term Debt (Details Textual)
$ in Thousands
3 Months Ended 6 Months Ended
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
USD ($)
Jun. 30, 2019
USD ($)
May 02, 2019
USD ($)
Dec. 31, 2018
USD ($)
Oct. 18, 2018
USD ($)
Credit Agreement, Maximum Leverage Ratio Following Material Acquisition     3.5 3.5      
Credit Agreement [Member]              
Line of Credit Facility, Maximum Borrowing Capacity         $ 250,000    
Letters of Credit Outstanding, Amount     $ 7,200 $ 7,200   $ 9,600  
Credit Agreement, Maximum Leverage Ratio     3.25        
Credit Agreement, Minimum Current Ratio     1        
Debt Instrument, Interest Rate During Period       5.10%      
Credit Agreement [Member] | Forecast [Member]              
Credit Agreement, Maximum Leverage Ratio 3 3          
Credit Agreement [Member] | Letter of Credit [Member]              
Line of Credit Facility, Maximum Borrowing Capacity             $ 30,000
Senior Second Lien Notes Due November 2023 [Member]              
Debt Instrument, Face Amount     $ 625,000 $ 625,000   $ 625,000 $ 625,000
Debt Instrument, Interest Rate, Stated Percentage             9.75%
Debt Instrument, Interest Rate, Effective Percentage             10.30%