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Convertible Senior Notes - Interest expenses incurred on Convertible notes payable (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2021
Convertible Senior Notes
Coupon interest	$ 885	$ 2,600
Amortization of debt issuance costs	194	579
Total interest expense on Notes	$ 1,079	$ 3,179

X

- Definition

Amount of amortization expense attributable to debt issuance costs.

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- Definition

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

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