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Note 9 - Capital Stock and Stock-based Compensation (Tables)

6 Months Ended

Jun. 30, 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												Market
		Stock				Average				Restricted								Condition
		Options				Exercise				Stock Units				Grant Date				RSU's				Grant Date
		Outstanding				Price				Outstanding				Fair Value				Outstanding				Fair Value
Balance at December 31, 2019			2,266,122			$	3.93				1,590,450			$	2.27				529,491			$	1.67
Granted			894,154				2.61				994,513				2.73				332,622				2.98
Exercised			(7,359	)			2.56				-				-				-				-
Expired			(15,819	)			2.59				-				-				-				-
Vested (RSUs)			-				-				(513,779	)			2.59				-				-
Cancelled / forfeited			(233,080	)			3.55				(70,313	)			3.24				(39,286	)			3.03
Balance at June 30, 2020			2,904,018			$	3.56				2,000,871			$	2.38				822,827			$	2.13

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

		Three Months Ended June 30,								Six Months Ended June 30,
		2020				2019				2020				2019
		(in thousands)								(in thousands)
Cost of revenues		$	14			$	8			$	24			$	21
Sales and marketing expenses			62				36				113				29
General and administrative expenses			645				529				1,341				1,080
Research and development expenses			48				42				84				76
Total stock-based compensation expenses		$	769			$	615			$	1,562			$	1,206

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

		Three Months Ended June 30,								Six Months Ended June 30,
		2020				2019				2020				2019
Basic			38,467,686				37,735,717				38,389,358				37,682,539
Dilutive effect of equity awards			-				-				-				-
Diluted			38,467,686				37,735,717				38,389,358				37,682,539

Monte-Carlo Valuation Simulation [Member]

Notes Tables

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

Volatility			80.6	%
Risk-free interest rate			0.2	%
Correlation coefficient			0.3
Dividend yield			-	%

Black Scholes Option Pricing Model [Member]

Notes Tables

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

Volatility	58.5	%
Risk-free interest rate	0.3	%
Expected holding period (in years)	4.4	years
Dividend Yield	-	%

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