v3.20.4

Convertible Notes (Tables)

12 Months Ended

Dec. 31, 2020

Convertible Notes

Schedule of amortization expense for debt issuance costs

​

​	​	​	​
​	​	Amortization
Year		Expense
2021	​	$	457
2022		​	457
2023		​	120
​	​	$	1,034

Convertible Notes

Convertible Notes

Schedule of Convertible Notes

​

​	​	​	​	​	​	​
​	​	December 31,
​		2020			2019
Par value of the Convertible Notes	​	$	201,250	​	$	201,250
Unamortized debt discounts	​		(27,949)	​		(36,813)
Unamortized debt issuance costs	​		(2,772)	​		(3,673)
Net carrying value of Convertible Notes	​	$	170,529	​	$	160,764

Schedule of interest expense related to the Convertible Notes

​

​	​	​	​	​	​	​	​	​	​	​
​	​	Year Ended December 31,								​
​		2020			2019		​	2018		​
Contractual interest expense	​	$	2,012		$	2,012	​	$	481	​
Amortization of debt issuance costs	​		901	​	​	849	​	​	205	​
Amortization of debt discount	​		8,864	​	​	8,245	​	​	1,992	​
Total	​	$	11,777	​	$	11,106	​	$	2,678	​
Effective interest rate of the liability component	​		7.1	%	​	7.1	%	​	7.1	%

Schedule of amortization expense for debt discount and debt issuance costs

​

​	​	​	​	​	​	​
​	​	Debt		​	Debt Issuance
Year		Discounts			Costs
2021	​	$	9,528	​	$	955
2022	​		10,241	​		1,015
2023	​		8,180	​		802
​	​	$	27,949	​	$	2,772

X

- Definition

Tabular disclosure of borrowings which can be exchanged for a specified number of another security at the option of the issuer or the holder. Disclosures include, but are not limited to, principal amount, amortized premium or discount, and amount of liability and equity components.

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