Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt Long-Term Debt - Convertible Notes Interest Expense (Details)

v2.4.1.9
Long-Term Debt Long-Term Debt - Convertible Notes Interest Expense (Details) (Convertible Notes [Member], USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Convertible Notes [Member]
   
Debt Instrument [Line Items]    
Interest per contractual rate $ 13,939us-gaap_InterestExpenseDebtExcludingAmortization
/ us-gaap_DebtInstrumentAxis
= us-gaap_ConvertibleDebtMember
$ 0us-gaap_InterestExpenseDebtExcludingAmortization
/ us-gaap_DebtInstrumentAxis
= us-gaap_ConvertibleDebtMember
Amortization of debt discount 6,598us-gaap_AmortizationOfDebtDiscountPremium
/ us-gaap_DebtInstrumentAxis
= us-gaap_ConvertibleDebtMember
0us-gaap_AmortizationOfDebtDiscountPremium
/ us-gaap_DebtInstrumentAxis
= us-gaap_ConvertibleDebtMember
Amortization of debt issuance costs 14us-gaap_AmortizationOfFinancingCosts
/ us-gaap_DebtInstrumentAxis
= us-gaap_ConvertibleDebtMember
0us-gaap_AmortizationOfFinancingCosts
/ us-gaap_DebtInstrumentAxis
= us-gaap_ConvertibleDebtMember
Total interest expense related to the Convertible Notes $ 20,551us-gaap_InterestExpenseDebt
/ us-gaap_DebtInstrumentAxis
= us-gaap_ConvertibleDebtMember
$ 0us-gaap_InterestExpenseDebt
/ us-gaap_DebtInstrumentAxis
= us-gaap_ConvertibleDebtMember