Debt - Schedule of Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Debt Disclosure [Abstract]
Contractual interest expense	$ 15,918	$ 8,438	$ 45,734	$ 26,945
Amortization of debt issuance costs	393	182	1,780	1,488
Amortization of debt discount	161	41	410	8,232
Debt Instrument, Interest Expense, Total	$ 16,472	$ 8,661	$ 47,924	$ 36,665

Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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Amount of amortization expense attributable to debt issuance costs.

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

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Represents the portion of interest incurred in the period on debt arrangements that was charged against earnings, excluding amortization of debt discount (premium) and financing costs.

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