Long-term Debt - Interest expense recognized (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Long-term Debt
Interest on convertible notes	$ 3,183	$ 2,734
Amortization of debt issuance costs	786	645
Debt issuance cost derecognized related to 2024 Notes	3,555
Interest on finance lease	215	184
Interest on borrowings under financing agreement	1,791
Other interest	31	27
Total interest expense	$ 9,561	$ 3,590

Amount of interest expense on borrowings under financing agreement.

No definition available.

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- Definition

Amount of amortization expense attributable to debt issuance costs.

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- References

No definition available.

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- Definition

Amount of interest expense on finance lease liability.

+ References

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- Definition

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

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- Definition

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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- Definition

Amount of interest expense classified as other.

+ References

No definition available.

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- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

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