XML 50 R33.htm IDEA: XBRL DOCUMENT v3.10.0.1
Long-term Debt - Outstanding obligations (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Sep. 30, 2018
May 14, 2018
Dec. 31, 2017
Jul. 31, 2017
Jun. 30, 2014
Debt Instrument [Line Items]            
Gross Amount $ 513,668 $ 515,106   $ 351,613    
Debt Discount and Issuance Costs (93,502) (98,223)   (56,852)    
Carrying Amount 420,166 416,883   294,761    
Less current portion, Gross Amount 195,162 197,748   0    
Less current portion, Debt Discount and Issuance Costs (4,924) (7,567)   0    
Less current portion, Carrying Amount 190,238 190,181   0    
Total long-term debt, Gross Amount 318,506 317,358   351,613    
Total long-term debt, Debt Discount and Issuance Costs (88,578) (90,656)   (56,852)    
Total long-term debt, Carrying Amount 229,928 226,702   294,761    
2019 Convertible Notes            
Debt Instrument [Line Items]            
Stated interest rate           2.125%
2024 Convertible Notes            
Debt Instrument [Line Items]            
Stated interest rate         2.875%  
Senior Notes | 2019 Convertible Notes            
Debt Instrument [Line Items]            
Gross Amount 195,000 195,000   195,000    
Debt Discount and Issuance Costs (4,924) (7,567)   (15,165)    
Carrying Amount 190,076 187,433   179,835    
Senior Notes | 2019 Convertible Notes Embedded Derivative            
Debt Instrument [Line Items]            
Gross Amount 21 2,552   12,863    
Debt Discount and Issuance Costs 0 0   0    
Carrying Amount 21 2,552   12,863    
Senior Notes | 2024 Convertible Notes            
Debt Instrument [Line Items]            
Gross Amount 143,750 143,750   143,750    
Debt Discount and Issuance Costs (36,568) (37,892)   (41,687)    
Carrying Amount 107,182 105,858   102,063    
Senior Notes | 2025 Convertible Notes            
Debt Instrument [Line Items]            
Gross Amount 172,500 172,500   0    
Debt Discount and Issuance Costs (51,184) (52,764)   0    
Carrying Amount 121,316 119,736   0    
Stated interest rate     2.375%      
Unsecured Debt | 8.5% unsecured notes due 2024            
Debt Instrument [Line Items]            
Gross Amount 1,237 1,304   0    
Debt Discount and Issuance Costs 0 0   0    
Carrying Amount $ 1,237 1,304   0    
Stated interest rate 8.50%          
Receivables Securitization Facility | CASHMAX secured borrowing facility            
Debt Instrument [Line Items]            
Gross Amount $ 1,160 0   0    
Debt Discount and Issuance Costs (826) 0   0    
Carrying Amount $ 334 $ 0   $ 0