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Note 15 - Equity-based Compensation (Tables)

9 Months Ended

Sep. 30, 2022

Notes Tables

Share-Based Payment Arrangement, Option, Activity [Table Text Block]

(in thousands, except years and per share data)		Awards				Weighted- Average Exercise Price				Weighted- Average Remaining Contractual Life (years)				Aggregate Intrinsic Value
Outstanding at December 31, 2021			4,449			$	1.39				7.6			$	460
Options granted			626			$	0.28
Restricted stock units granted			180			$	—
Restricted stock units vested			(120	)		$	—
Options forfeited/cancelled			(362	)		$	3.50
Restricted stock units cancelled			(30	)		$	—
Outstanding at September 30, 2022			4,743			$	1.07				7.8			$	135
Vested and expected to vest at September 30, 2022			3,492			$	1.42				7.4			$	20
Vested at September 30, 2022			2,068			$	2.06				6.3			$	—
Exercisable at September 30, 2022			2,068			$	2.06				6.3			$	—

Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]

		Three Months Ended September 30,								Nine Months Ended September 30,
		2022				2021				2022				2021
Research and development		$	5			$	2			$	14			$	8
Sales and marketing			12				53				37				118
General and administrative			(225	)			169				79				576
Total stock-based compensation expense		$	(208	)		$	224			$	130			$	702

Employees and Directors [Member]

Notes Tables

Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

		Nine Months Ended September 30,
Assumption		2022				2021
Expected price volatility			158.04	%			163.95	%
Expected term (in years)			6.45				6.19
Risk-free interest rate			2.29	%			0.92	%
Dividend yield			0.00	%			0.00	%
Weighted-average fair value of options granted during the period		$	0.27			$	0.71

X

- Definition

Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.

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