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Loans and Convertible Notes Payable (Tables)

3 Months Ended

Aug. 06, 2021

Mar. 31, 2022

Debt Disclosure [Abstract]

Summary of Loans and Convertible Notes Payable

		March 31, 2022												December 31, 2021
		Gross				Discount				Net				Gross				Discount				Net
Loan - Avenue [1]			12,638				(1,485	)			11,153				12,638				(1,645	)			10,993
Loan - Avenue [1] - Less Current Portion			(2,856	)			336				(2,520	)			(714	)			93				(621	)
Total - Loans Payable, Non-Current		$	9,782			$	(1,149	)		$	8,633			$	11,924			$	(1,552	)		$	10,372
Convertible Note Payable - Rosalind			2,000				—				2,000				2,000				—				2,000
Convertible Portion of Loan Payable - Avenue			3,000				(325	)			2,675				3,000				(361	)			2,639
Total - Convertible Notes Payable - Non-Current		$	5,000			$	(325	)		$	4,675			$	5,000			$	(361	)		$	4,639

[1]  The gross amount includes the 4.25% final payment of $638,000.

Summary of Remaining Maturities of Company's Loan and Convertible Note Payables

Remaining maturities of the Company’s loan and convertible note payables are as follows (in thousands):

		Loans				Convertible Notes				Total
Year ended December 31, 2022		$	714			$	—			$	714
Year ended December 31, 2023			8,571				—				8,571
Year ended December 31, 2024			3,353				5,000				8,353
Total		$	12,638			$	5,000			$	17,638

Summary of Avenue Warrant Valued Using the Black-Scholes Option Pricing Method

The Avenue Warrant was valued at issuance at $1.3 million using the Black-Scholes option pricing method using the following assumptions:

		August 6, 2021
Contractual term (years)			5.07
Expected volatility			187.0	%
Risk-free interest rate			0.77	%
Expected dividends			0.00	%

The Company values stock options using the Black-Scholes option pricing model and used the following assumptions during the reporting periods:     

		Three months ended March 31,
		2022			2021
Expected terms (years)			5.46 - 6.46		N/A
Expected volatility			174.81% - 177.09	%	N/A
Risk-free interest rate			1.75% - 1.90	%	N/A
Expected dividends			0.00	%	N/A

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