XML 70 R59.htm IDEA: XBRL DOCUMENT v3.10.0.1
Debt - Narrative (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2018
Dec. 31, 2017
Line of Credit [Member]    
Debt Instrument [Line Items]    
Line of Credit Facility Current Borrowing Capacity $ 300.0  
Line of Credit Facility Maximum Borrowing Capacity $ 400.0  
Debt Instrument Maturity Date Description The Credit Facility was amended and restated to extend the maturity date from June 2019 to October 2019 in the second quarter of 2018, and the Company anticipates further extending the Credit Facility maturity date through December 15, 2019 during the third quarter of 2018.  
Line of Credit Facility, Covenant Terms The Credit Facility has certain financial and other covenants, with the key financial covenant requiring that the Company’s consolidated net debt to adjusted EBITDA ratio cannot exceed 3.50 to 1.  
Line of Credit Facility, Covenant Compliance As of June 30, 2018, and December 31, 2017, the Company’s net debt to adjusted EBITDA ratio was below 1.0 to 1, and the Company was also in compliance with all of its other covenants.  
Line of Credit Facility, Amount Outstanding $ 46.2 $ 48.5
Industrial Development Bond Due 2018 [Member]    
Debt Instrument [Line Items]    
Industrial Development Revenue Bond $ 5.0 $ 5.0