XML 67 R55.htm IDEA: XBRL DOCUMENT v3.7.0.1
Debt - Schedule of Components of Long-term Debt (Details) - USD ($)
Mar. 31, 2017
Dec. 31, 2016
Debt Instrument [Line Items]    
Other debt $ 16,300,000 $ 16,100,000
Total 301,400,000 300,000,000
Less – current maturities 106,300,000 106,000,000
Total long-term debt 195,100,000 194,000,000
Senior Notes | 5.50% convertible senior notes due March 1, 2021    
Debt Instrument [Line Items]    
Senior notes $ 180,800,000 179,100,000
Interest rate 5.50%  
Face value $ 213,500,000 213,500,000
Unamortized discount and fees 32,700,000 34,400,000
Senior Notes | 6.25% senior notes due August 15, 2017    
Debt Instrument [Line Items]    
Senior notes $ 94,800,000 94,700,000
Interest rate 6.25%  
Face value $ 95,000,000 95,000,000
Unamortized discount and fees 200,000 300,000
Capital Lease Obligations    
Debt Instrument [Line Items]    
Capital leases $ 9,500,000 $ 10,100,000