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Note 13 - Equity-based Compensation (Tables)

3 Months Ended

Mar. 31, 2024

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, 2023			125			$	31.15				7.3			$	1
Options forfeited/cancelled			(8	)		$	20.36
Outstanding at March 31, 2024			117			$	31.91				6.8			$	1
Vested and expected to vest at March 31, 2024			111			$	33.17				6.7			$	1
Vested and exercisable at March 31, 2024			62			$	56.86				5.0			$	—

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

		For the Three Months Ended March 31,
		2024				2023
Research and development		$	4			$	6
Sales and marketing			26				15
General and administrative			30				54
Total stock-based compensation expense		$	60			$	75

Employees and Directors [Member]

Notes Tables

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

Assumption		For the Three Months Ended March 31, 2023
Expected price volatility			154.49	%
Expected term (in years)			6.66
Risk-free interest rate			3.41	%
Dividend yield			0.00	%
Weighted-average fair value of options granted during the period		$	2.37

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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