DEBT (Tables)

3 Months Ended

Mar. 31, 2020

Debt Disclosure [Abstract]

Schedule of Debt

The following table provides information regarding the Company’s long-term debt.

	March 31, 2020			December 31, 2019
	(In thousands)
Convertible notes
Notes due 2025	$	320,000		$	—
Less: unamortized discount and issuance costs	(75,450		)	—
Carrying amount of Notes due 2025	244,550			—
Notes due 2025 embedded derivative	45,100			—
Notes due 2024	132,000			132,000
Less: unamortized discount and issuance costs	(34,087		)	(35,815		)
Carrying amount of Notes due 2024	97,913			96,185
Notes due 2023	5,000			5,000
Less: unamortized issuance costs	(132		)	(143		)
Carrying amount of Notes due 2023	4,868			4,857
Sale of long-term financing receivable recorded as debt	3,352			4,501
Total carrying amount of debt	395,783			105,543
Less: current portion of convertible notes and long-term financing receivable recorded as debt	(100,567		)	(2,884		)
Long-term debt	$	295,216		$	102,659

The following table presents the total amount of interest cost recognized relating to the Notes due 2025:

	Three Months Ended March 31, 2020
	(In thousands)
Contractual interest expense	$	49
Amortization of debt discount	743
Amortization of debt issuance costs	87
Total interest cost recognized	$	879

The following table presents the total amount of interest cost recognized relating to the Notes due 2024:

	Three Months Ended March 31, 2020
	(In thousands)
Contractual interest expense	$	330
Amortization of debt discount	1,562
Amortization of debt issuance costs	166
Total interest cost recognized	$	2,058

The following table presents the amount of interest cost recognized relating to the contractual interest coupon and the amortization of debt issuance costs of the Notes due 2023.

	Three Months Ended March 31,
	2020		2019
	(In thousands)
Contractual interest expense	$	50	$	650
Amortization of debt issuance costs	10		129
Total interest costs recognized	$	60	$	779

Schedule of Fair Value and Change in Fair Value Of Convertible Note Embedded Derivative

The following table presents the fair value and the change in fair value for convertible note embedded derivative (in thousands):

Convertible note embedded derivative
Fair value as of March 09, 2020	$	68,700
Change in the fair value	(23,600		)
Fair value as of March 31, 2020	$	45,100

Schedule of Fair Value Of Convertible Notes Hedge and Warrants Liability

The following table presents the Company’s assets and liabilities that were measured at fair value on a recurring basis and its categorization within the fair value hierarchy.

	March 31, 2020				December 31, 2019
	(In thousands)
	Level 2		Level 3		Level 2		Level 3
Assets:
Convertible notes hedge	$	47,885	$	—	$	—	$	—
Liabilities:
Debt, non-current
Convertible notes embedded derivative	45,100		—		—		—
Warrants liability	38,637		—		—		—
Warranty obligations
Current	—		6,578		—		6,794
Non-current	—		13,847		—		13,012
Total warranty obligations measured at fair value	—		20,425		—		19,806
Total liabilities measured at fair value	$	83,737	$	20,425	$	—	$	19,806

The following table presents the fair value and the change in fair value for Convertible notes hedge and Warrants liability (in thousands):

	Convertible notes hedge			Warrants liability
	(In thousands)
Fair value as of March 09, 2020	$	89,056		$	71,552
Change in the fair value	(41,171		)	(32,915		)
Fair value as of March 31, 2020	$	47,885		$	38,637