Note 10 - Share-based Compensation (Tables)

9 Months Ended

Sep. 30, 2023

Notes Tables

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

				Weighted Average
	Options on Common Shares			Exercise Price		Remaining Contractual Term		Aggregate Intrinsic Value
Outstanding January 1, 2023		5,491,399		$	3.72		5.96	$	92
Granted		60,000		$	1.34
Exercised		(250	)	$	1.50
Forfeited, cancelled, expired		(3,329,476	)	$	5.54
Outstanding September 30, 2023		2,221,673		$	3.56		7.65	$	10
Exercisable September 30, 2023		1,033,504		$	4.37		7.02	$	-

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

	For the Nine Months
	Ended September 30,
	2023			2022
Expected stock price volatility		49	%		49	%
Risk-free interest rate		3.64	%		1.17	%
Expected dividend yield		0	%		0	%
Expected life of options		6.66			3.46
Weighted-average fair value of options granted	$	0.55		$	1.25

Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]

	Service-Based RSU's			Weighted Average Grant Date Fair Value		Weighted Average Vesting Period (Years)
Unvested at January 1, 2023		922,057		$	2.88		2.11
Granted - service based		686,394		$	1.33
Vested		(862,993	)	$	2.87
Forfeited and cancelled		(298,381	)	$	2.47
Unvested at September 30, 2023		447,077		$	2.00		1.74

Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block]

	Three Months Ended September 30,					Nine Months Ended September 30,
	2023			2022		2023		2022
Selling, general and administrative	$	(149	)	$	700	$	1,404	$	2,180
Research and development		(53	)		172		244		448
Total share-based expense	$	(202	)	$	872	$	1,648	$	2,628