CONVERTIBLE NOTES AND CREDIT FACILITY (Tables)

6 Months Ended

Jun. 30, 2021

Debt Disclosure [Abstract]

Convertible Debt

	June 30, 2021		December 31, 2020
Principal amount of the Notes	$	86,250	$	86,250
Unamortized debt discount	(2,426)		(37,791)
Net carrying amount	$	83,824	$	48,459

Interest Income and Interest Expense Disclosure

Interest expense related to the Notes is comprised of the amortization of debt discount and debt issuance costs and the contractual coupon interest as follows (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Interest expense related to contractual coupon interest	$	809	$	809	$	1,617	$	1,617
Interest expense related to amortization of the debt discount	103		1,524		205		3,049
	$	912	$	2,333	$	1,822	$	4,666