Convertible Debt (Tables)

6 Months Ended

Jun. 30, 2020

Convertible Debt [Abstract]

Schedule Of Convertible Notes

	As of
	June 30,		December 31,
	2020		2019
Debt component:
Principal	$	215,000	$	215,000
Less: Unamortized debt discount		(20,173)		(22,738)
Less: Unamortized debt issuance costs		(3,186)		(3,595)
Net carrying amount	$	191,641	$	188,667
Equity component (1)	$	35,547	$	35,547

(1)Recorded in the Consolidated Balance Sheets within additional paid-in capital.

Schedule Of Interest Expense Recognized

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2020		2019		2020		2019
3.375% contractual coupon	$	1,814	$	1,814	$	3,628	$	3,628
Amortization of debt discount		1,293		1,213		2,565		2,406
Amortization of debt issuance costs		190		169		409		334
Additional interest on Convertible Notes (1)		—		—		—		1,370
Interest expense	$	3,297	$	3,196	$	6,602	$	7,738

(1)During the six months ended June 30, 2019, additional nonrecurring interest expense was incurred pursuant to the notes’ indenture related to the removal of the restrictive legend and assignment of the unrestricted CUSIP on the Convertible Notes.