CONVERTIBLE NOTES PAYABLE (Tables)

3 Months Ended

Mar. 31, 2022

Debt Disclosure [Abstract]

Schedule of long-term debt instruments

The composition of the Company’s convertible senior notes are as follows (in thousands):

	March 31, 2022		December 31, 2021
2.25% convertible senior notes due 2029	$	316,250	$	—
2.50% convertible senior notes due 2025	68,904		276,000
Unamortized debt discount	—		(46,045)
Unamortized debt issuance costs - 2.25% convertible senior notes due 2029	(9,726)		—
Unamortized debt issuance costs - 2.50% convertible senior notes due 2025	(1,095)		(3,374)
Total convertible senior notes, net of unamortized debt discount and debt issuance costs	$	374,333	$	226,581

The following table sets forth total interest expense recognized related to the 2025 and 2029 Notes (in thousands):

	Three Months Ended March 31,
	2022		2021
Contractual interest expense	$	1,843	$	1,725
Amortization of debt discount	—		2,511
Amortization of debt issuance costs	337		225
Total interest expense for the 2025 and 2029 Notes	$	2,180	$	4,461