Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidating Financial Information (Condensed Consolidating Statements of Comprehensive Income) (Loss) (Details)

v3.7.0.1
Condensed Consolidating Financial Information (Condensed Consolidating Statements of Comprehensive Income) (Loss) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Condensed Financial Statements, Captions [Line Items]    
Net income (loss) $ 154,455 $ (242,267)
Foreign currency translation adjustment 1,373 9,058
Other comprehensive income 1,373 9,058
Comprehensive income (loss) 155,828 (233,209)
Reportable Legal Entities | Parent    
Condensed Financial Statements, Captions [Line Items]    
Net income (loss) 154,455 (242,267)
Foreign currency translation adjustment 1,373 9,058
Other comprehensive income 1,373 9,058
Comprehensive income (loss) 155,828 (233,209)
Reportable Legal Entities | Guarantors    
Condensed Financial Statements, Captions [Line Items]    
Net income (loss) 45,881 (34)
Foreign currency translation adjustment 55 0
Other comprehensive income 55 0
Comprehensive income (loss) 45,936 (34)
Reportable Legal Entities | Non-Guarantor    
Condensed Financial Statements, Captions [Line Items]    
Net income (loss) (366) (23,687)
Foreign currency translation adjustment 1,318 10,273
Other comprehensive income 1,318 10,273
Comprehensive income (loss) 952 (13,414)
Eliminations    
Condensed Financial Statements, Captions [Line Items]    
Net income (loss) (45,515) 23,721
Foreign currency translation adjustment (1,373) (10,273)
Other comprehensive income (1,373) (10,273)
Comprehensive income (loss) $ (46,888) $ 13,448