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Note 10 - Capital Stock and Stock-based Compensation (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

Schedule Of Stock Options And Restricted Stock Units Activity Roll forward [Table Text Block]

		Stock Options								Restricted Stock Units								Market Condition RSU's
						Weighted
		Stock				Average				Restricted								Market
		Options				Exercise				Stock Units				Grant Date				Condition RSU's				Grant Date
		Outstanding				Price				Outstanding				Fair Value				Outstanding				Fair Value
Balance at December 31, 2018			1,956,732			$	4.25				1,233,762			$	3.36				116,944			$	4.19
Granted			943,424				3.28				1,652,720				2.31				605,005				1.98
Exercised			(3,750	)			2.98				-				-				-				-
Vested (RSUs)			-				-				(813,762	)			3.29				(3,778	)			4.19
Cancelled/Forfeited			(630,284	)			3.96				(482,270	)			3.42				(188,680	)			4.18
Balance at December 31, 2019			2,266,122				3.93				1,590,450				2.27				529,491				1.67
Granted			894,154				2.61				1,027,486				2.75				332,622				2.98
Exercised			(253,853	)			3.94				-				-				-				-
Vested (RSUs)			-				-				(930,985	)			2.41				(240,205	)			1.53
Cancelled/Forfeited			(269,084	)			3.68				(126,490	)			3.13				(41,932	)			3.04
Market Condition RSU - factor adjustment			-				-				-				-				233,055				1.47
Balance at December 31, 2020			2,637,339			$	3.51				1,560,461			$	2.44				813,031			$	2.12

Schedule of Weighted Average Number of Shares [Table Text Block]

		Year Ended December 31, 2020
		2020				2019
Basic			38,640,284				37,813,580
Dilutive effect of equity awards			-				-
Diluted			38,640,284				37,813,580

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

					Options Outstanding																Options Exercisable
									Weighted																Weighted
									Average																Average
									Remaining				Weighted												Remaining				Weighted
Range of									Contractual				Average				Aggregate								Contractual				Average				Aggregate
Exercise					Number				Life				Exercise				Intrinsic				Shares				Life				Exercise				Intrinsic
Price					Outstanding				in Years				Price				Value				Exercisable				in Years				Price				Value
$1.78	-	2.62				357,018				7.5			$	2.27			$	723				96,488				4.8			$	2.29			$	193
2.63	-	2.66				717,044				6.4				2.63				1,190				179,264				6.4				2.63				298
2.67	-	3.92				568,784				7.1				3.33				545				348,704				6.2				3.36				323
3.93	-	4.38				587,693				2.9				4.23				35				587,693				2.9				4.23				35
4.39	-	5.63				406,800				4.3				5.37				-				401,800				4.3				5.38				-
$1.78	-	5.63				2,637,339				5.6			$	3.51			$	2,493				1,613,949				4.5			$	4.04			$	849

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

		Year Ended December 31,
(in thousands)		2020				2019
Cost of revenues		$	65			$	43
Sales and marketing expenses			263				119
General and administrative expenses			3,122				2,710
Research and development expenses			197				162
Total stock-based compensation expenses		$	3,647			$	3,034

Monte-Carlo Valuation Simulation [Member]

Notes Tables

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

		2020				2019
Volatility			80.6	%			59	%
Risk-free interest rate			0.2	%			2	%
Correlation coefficient			31.5	%			23.6	%
Dividend Yield			-	%			-	%

Black Scholes Option Pricing Model [Member]

Notes Tables

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

		2020				2019
Volatility			58.3	%			48.1	%
Risk-free interest rate			0.3	%			2.1	%
Expected holding period (in years)			4.4				4.7
Dividend Yield			-	%			-	%

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