Fair Value (Tables)

3 Months Ended

Mar. 31, 2023

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

The tables below set forth, by level, our financial assets that are accounted for at fair value for the respective periods. The table does not include assets and liabilities that are measured at historical cost or any basis other than fair value (in thousands):

	Fair Value Measured at Reporting Date Using
March 31, 2023	Level 1		Level 2		Level 3		Total
Assets
Cash equivalents:
Money market funds	$	163,701	$	—	$	—	$	163,701
	$	163,701	$	—	$	—	$	163,701
Liabilities
Derivatives:
Embedded EPP derivatives	—		—		5,778		$	5,778
	$	—	$	—	$	5,778	$	5,778

	Fair Value Measured at Reporting Date Using
December 31, 2022	Level 1		Level 2		Level 3		Total
Assets
Cash equivalents:
Money market funds	$	291,903	$	—	$	—	$	291,903
	$	291,903	$	—	$	—	$	291,903
Liabilities
Derivatives:
Embedded EPP derivatives	—		—		5,895		$	5,895
	$	—	$	—	$	5,895	$	5,895

Schedule of Change in Level 3 Financial Liabilities

The changes in the Level 3 financial liabilities during the three months ended March 31, 2023 were as follows (in thousands):

	Embedded EPP Derivative Liability
Liabilities at December 31, 2022	$	5,895
Changes in fair value	(117)
Liabilities at March 31, 2023	$	5,778

Schedule of Fair Values and Carrying Values of Customer Receivables and Debt Instruments

The following table presents the estimated fair values and carrying values of debt instruments (in thousands):

	March 31, 2023		December 31, 2022
	Net Carrying Value	Fair Value	Net Carrying Value	Fair Value
Debt instruments
Recourse:
10.25% Senior Secured Notes due March 2027	57,029	55,991	60,960	60,472
2.5% Green Convertible Senior Notes due August 2025	225,324	316,664	224,832	309,488
Non-recourse:
3.04% Senior Secured Notes due June 2031	119,999	112,252	125,787	117,028