Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2019

Long-Term Debt

Schedule of convertible notes payable

Total convertible notes payable consisted of the following at (in thousands):

	December 31,		December 31,
	2019		2018
Principal amount of Notes	$	325,000	$	325,000
Unamortized debt issuance costs		(4,389)		(5,813)
Total convertible notes payable	$	320,611	$	319,187

Schedule of interest expense

Interest expense incurred in connection with the Notes consisted of the following for the years ended December 31 (in thousands):

	2019		2018		2017
Coupon interest at 3.75%	$	12,188	$	12,188	$	12,188
Amortization of debt issuance costs		1,424		1,424		1,424
Total interest expense on Notes	$	13,612	$	13,612	$	13,612