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SHARE-BASED PAYMENTS (Tables)

12 Months Ended

Dec. 31, 2020

Share-based Payment Arrangement [Abstract]

Schedule of share-based compensation, stock options, activity

The summary of the Company’s stock options at December 31, 2020, 2019 and 2018, respectively, and the changes for the fiscal periods ending on those dates are presented below:

			Range of Exercise Prices						Weighted Average Exercise Price						Number of Options
Balance, December 31, 2017			$1.77 - $15.61						$	4.48					2,028,847
Granted			1.70 - 2.88						1.75						442,956
Exercised			1.70 - 2.55						2.15						(355,092)
Forfeited			1.70 - 6.63						3.96						(213,393)
Expired			5.86 - 10.36						8.18						(170,564)
Balance, December 31, 2018			$1.70 - $15.61						$	3.84					1,732,754
Granted			2.92						2.92						296,450
Exercised			1.70 - 2.92						2.27						(54,805)
Forfeited			1.70 - 7.42						3.94						(342,866)
Expired			6.97						6.97						(144,100)
Balance, December 31, 2019			$1.70 - $15.61						$	3.43					1,487,433
Granted			1.76 - 3.06						1.77						711,414
Exercised			1.70 - 2.92						1.97						(302,707)
Forfeited			1.70 - 5.18						3.26						(188,541)
Expired			4.12 - 5.22						4.40						(98,512)
Balance, December 31, 2020			$1.70 - $15.61						$	2.91					1,609,087

Schedule of share-based compensation, shares authorized under stock option plans, by exercise price range

As of December 31, 2020, the outstanding stock options denominated in USD$ were as follows:

			Options Outstanding																								Options Exercisable
Exercise price			Quantity						Weighted Average Price						Weighted Average Remaining Contractual Life						Intrinsic Value						Quantity						Weighted Average Price						Weighted Average Remaining Contractual Life						Intrinsic Value
$— to $4.99			1,449,587						$	2.41					2.91						$	2,731					1,045,597						$	2.59					2.61						$	1,803
$5.00 to $9.99			133,235						$	6.16					1.52						—						133,235						6.16						1.52						—
$10.00 to $14.99			13,515						$	12.59					0.27						—						13,515						12.59						0.27						—
$15.00 to $19.99			12,750						$	15.61					0.03						—						12,750						$	15.61					0.03						—
			1,609,087																		$	2,731					1,205,097																		$	1,803

Schedule of compensation costs for share-based payment arrangements

The share-based compensation recorded during the years ended December 31, 2020, 2019 and 2018 are as follows:

			Years ended December 31,
			2020						2019						2018
Share-based compensation (1)(2)			$	2,598					$	3,771					$	2,762

(1)The fair value of the options granted under the Equity Incentive Plan for the years ended December 31, 2020, 2019 and 2018 was estimated at the date of grant, using the Black-Scholes Option Valuation Model, with the following weighted average assumptions:

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

			Years ended December 31,
			2020						2019						2018
Risk-free interest rate			1.27		%				2.62		%				2.84		%
Expected life			4.6 years						5.0 years						5.0 years
Expected volatility			61.81		%				59.38		%	*			59.00		%	*
Expected dividend yield			0		%				0		%				0		%
Weighted average grant date fair value			$	0.82					$	1.54					$	0.96

* Expected volatility is measured based on the Company’s historical share price volatility over a period equivalent to the expected life of the options.

(2)The fair value of the RSUs granted under the Equity Incentive Plan for the years ended December 31, 2020, 2019 and 2018, was estimated at the date of grant, using the stated market price.

Schedule of share-based compensation, restricted stock and restricted stock units activity

A summary of the status and activity of non-vested stock options at December 31, 2020 is as follows:

			Number of Shares						Weighted Average Grant Date Fair Value
Non-vested December 31, 2017			365,180						$	1.20
Granted			442,956						0.96
Vested			(448,662)						1.10
Forfeited			(62,430)						0.96
Non-vested December 31, 2018			297,044						$	1.06
Granted			296,450						1.54
Vested			(356,626)						1.27
Forfeited			(13,487)						1.59
Non-vested December 31, 2019			223,381						$	1.32
Granted			711,414						0.82
Vested			(508,630)						0.94
Forfeited			(22,175)						0.96
Non-vested December 31, 2020			403,990						$	0.94

A summary of the status and activity of non-vested RSUs at December 31, 2020 is as follows:

			Number of Shares						Weighted Average Grant Date Fair Value
Non-vested December 31, 2017			1,909,477						$	2.17
Granted			1,191,132						1.70
Vested			(1,486,126)						2.24
Forfeited			(34,296)						2.00
Non-vested December 31, 2018			1,580,187						$	1.99
Granted			731,435						2.91
Vested			(862,378)						2.00
Forfeited			(133,708)						2.40
Non-vested December 31, 2019			1,315,536						$	2.45
Granted			740,998						1.65
Vested			(746,477)						2.45
Forfeited			(216,001)						2.13
Non-vested December 31, 2020			1,094,056						$	1.98

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Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms.

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Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

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Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year.

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