DEBT OBLIGATIONS (Tables)

9 Months Ended

Sep. 30, 2021

Debt Disclosure [Abstract]

Schedule of debt obligations

The Company’s current and non-current portions of long-term debt were as follows:

	September 30, 2021		December 31, 2020
(in thousands)
Long-term debt
Convertible Notes due 2026	$	690,000	$	—
Paycheck Protection Loan	—		3,364
Less: Unamortized debt issuance costs	(15,950)		—
Net carrying amount	674,050		3,364
Less: Current installments of long-term debt	—		(2,403)
Long-term debt, net of current portion	$	674,050	$	961
Long-term debt to related party
Offtake Advances	$	32,575	$	71,843
Less: Unamortized debt discount	(1,638)		(5,393)
Net carrying amount	30,937		66,450
Less: Current installments of long-term debt to related party	(30,937)		(22,070)
Long-term debt to related party, net of current portion	$	—	$	44,380

The current and non-current portions of the equipment notes, which are included within the unaudited Condensed Consolidated Balance Sheets in “Other current liabilities” and “Other non-current liabilities,” respectively, were as follows:

	September 30, 2021		December 31, 2020
(in thousands)
Equipment notes
Current	$	2,586	$	835
Non-current	7,732		1,267
	$	10,318	$	2,102

Interest expense, net

Interest expense, net, was as follows:

	For the three months ended September 30,				For the nine months ended September 30,
(in thousands)	2021		2020		2021		2020
Interest expense	$	2,660	$	1,713	$	6,620	$	3,582
Capitalized interest	(36)		—		(203)		—
Interest expense, net	$	2,624	$	1,713	$	6,417	$	3,582

Interest expense related to the Convertible Notes was as follows:

	For the three months ended September 30,				For the nine months ended September 30,
(in thousands)	2021		2020		2021		2020
Coupon interest	$	431	$	—	$	886	$	—
Amortization of debt issuance costs	876		—		1,799		—
Convertible Notes interest expense	$	1,307	$	—	$	2,685	$	—