Note 12 - Share-based Compensation (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

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

				Weighted Average
	Options on					Remaining		Aggregate
	Common			Exercise		Contractual		Intrinsic
	Shares			Price		Term		Value
Outstanding January 1, 2020		2,928,750		$	2.96		3.71
Granted		1,423,836		$	6.66		-
Exercised		(371,000	)	$	1.90		-
Forfeited, cancelled, expired		(50,000	)	$	3.00		-
Outstanding December 31, 2020		3,931,586		$	4.41		4.80
Granted		1,254,500		$	5.33
Exercised		(915,404	)	$	1.83
Forfeited, cancelled, expired		(334,799	)	$	5.14
Outstanding December 31, 2021		3,935,883		$	5.24		4.79	$	1,608
Exercisable December 31, 2021		2,415,063		$	5.19		2.44	$	1,608

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

	For the Year Ended
	December 31,
	2021			2020
Expected stock price volatility		50	%		47	%
Risk-free interest rate		0.90	%		0.38	%
Expected dividend yield		0	%		0	%
Expected life of options - years		5.74			5.64
Weighted-average fair value of options granted	$	2.57		$	2.90

Share-based Payment Arrangement, Option, Exercise Price Range [Table Text Block]

				Weighted
				Average		Weighted				Weighted
				Remaining		Average				Average
Range of		Number		Contractual		Exercise		Number		Exercise
Exercise Prices		Outstanding		Life (Years)		Price		Exercisable		Price
$	1.50 - 3.61		652,750		1.32	$	1.61		652,750	$	1.61
$	3.85 - 5.775		2,638,133		5.83	$	5.20		1,373,564	$	5.33
$	5.88 - 8.82		295,000		8.45	$	6.58		38,749	$	6.34
$	11.22		350,000		0.33	$	11.22		350,000	$	11.22

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

				Weighted Average		Weighted Average
	Service-Based			Grant Date		Vesting
	RSU's			Fair Value		Period (Years)
Unvested at January 1, 2020		308,087		$	6.77	3.0
Granted - service based		310,874		$	6.02
Granted - performance based		35,211		$	4.26
Vested		(144,687	)	$	5.17
Forfeited and cancelled		(81,479	)	$	6.47
Unvested at December 31, 2020		428,006		$	6.13	2.3
Granted - service based		398,662		$	5.59
Vested		(524,491	)	$	5.55
Forfeited and cancelled		(32,874	)	$	6.10
Unvested at December 31, 2021		269,303		$	6.47	2.0

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

	For the Year Ended
	December 31,
	2021		2020
Selling, general and administrative	$	4,558	$	1,957
Research and development		798		280
Total share-based expense	$	5,356	$	2,237