Borrowing Arrangements (Tables)

12 Months Ended

Dec. 31, 2021

Debt Disclosure [Abstract]

Summary Of Estimated Fair Value Of The 2022 And 2023 Notes Embedded Derivative

The estimated fair value of the embedded derivative is as follows (in thousands):

	Embedded Derivative Liability
Fair value as of December 31, 2019	$	1,192
Change in fair value		(643	)
Fair value as of December 31, 2020		549
Conversion of 2023 Notes		(377	)
Fair value as of December 31, 2021	$	172

The estimated fair value of the embedded derivative is as follows (in thousands):

	Embedded Derivative Liability
Fair value as of December 31, 2019	$	—
Additions		5,231
Change in fair value		(759	)
Fair value as of December 31, 2020		4,472
Additions		17,540
Change in fair value		4,005
Fair value as of December 31, 2021	$	26,017

Schedule Of Interest Expense

The following table represents the total amount of interest expense recognized in interest expense, net on the consolidated statements of operations (in thousands):

	For the Years Ended December 31,
	2021		2020
Contractual interest expense	$	3,074	$	2,850
Accretion of debt discount		560		519
Accretion of debt issuance costs		233		233
	$	3,867	$	3,602

The following table represents the total amount of interest cost recognized relating to the 2023 Notes for the years ended December 31, 2021 and 2020 (in thousands):

	For the Years Ended December 31,
	2021		2020
Contractual interest expense	$	5,895	$	923
Accretion of debt discount		11,639		104
Accretion of debt issuance costs		87		1,714
	$	17,621	$	2,741

Summary Of the Company's outstanding borrowing arrangements

The following table summarizes the Company’s outstanding borrowing arrangements:

	As of December 31,
	2021			2020
2022 Notes	$	34,355			31,741
2023 Notes		71,633			17,037
PPP Loan		—			2,515
	$	105,988		$	51,293
Less: Unamortized debt issuance costs and discounts		(38,853	)		(11,893	)
Total	$	67,135		$	39,400