v3.19.2

Convertible Notes (Tables) - Convertible Notes

6 Months Ended

Jun. 30, 2019

Convertible Notes

Schedule of Convertible Notes

​	​	​	​
​		June 30,
​	​	2019
Par value of the Convertible Notes	​	$	201,250
Unamortized debt discounts	​		(41,010)
Unamortized debt issuance costs	​		(4,104)
Net carrying value of Convertible Notes	​	$	156,136

Schedule of interest expense related to the Convertible Notes

​	​	​	​	​	​	​	​
​	​	Three Months		​	​	​	​
​		Ended			Six Months Ended		​
​	​	June 30, 2019			June 30, 2019		​
Contractual interest expense	​	$	503	​	$	1,006	​
Amortization of debt issuance costs	​		211	​	​	419	​
Amortization of debt discount	​		2,042	​	​	4,048	​
Total	​	$	2,756	​	$	5,473	​
Effective interest rate of the liability component	​		7.1	%	​	7.1	%

Schedule of amortization expense for debt discount and debt issuance costs

​	​	​	​	​	​	​
​		Debt			Debt Issuance
​	​	Discounts		​	Costs
July 1, 2019―December 31, 2019	​	$	4,197	​	$	431
January 1, 2020―December 31, 2020	​		8,864	​		901
January 1, 2021―December 31, 2021	​		9,528	​		955
January 1, 2022―December 31, 2022	​		10,241	​		1,015
January 1, 2023―December 31, 2023	​		8,180	​		802
​	​	$	41,010	​	$	4,104

​

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- 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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