Debt - Schedule of Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Debt Instrument [Line Items]
Amortization of debt discount and issuance costs	$ 16,555	$ 13,009
Capitalization of interest expense	(922)	(1,391)
Total interest expense	17,205	12,116
Credit Agreement
Debt Instrument [Line Items]
Interest on debt instruments	135	139
Convertible Debt \| 2025 Notes
Debt Instrument [Line Items]
Interest on debt instruments	359	359
Convertible Debt \| 2027 Notes
Debt Instrument [Line Items]
Interest on debt instruments	$ 1,078	$ 0

Increase for accrued, but unpaid interest on the debt instrument for the period.

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Amount of the cost of borrowed funds accounted for as interest expense.

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