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ORDINARY SHARE AND SHARE INCENTIVE PLANS (Tables)

12 Months Ended

Dec. 31, 2021

Summary of the Assumptions Used in the Estimating the Fair Values of Stock-based Payment Awards Excluding Non-employee

		Years ended December 31,
Stock Options:		2021				2016
Expected term in years			4.25				4.75
Weighted average risk-free interest rate			1.02	%			1.30	%
Expected dividend rate			—	%			—	%
Volatility			55.21	%			51.6	%

Summary of Stock-based Compensation Expense Recognized in Consolidated Statements of Comprehensive Loss

		Years Ended December 31,
		2021				2020				2019
		(in thousands)
Cost of net sales		$	87			$	89			$	136
Selling, general and administrative			236				360				985
Research and development			181				254				278
Total		$	504			$	703			$	1,399

2017 Equity Incentive Plan

Summary of Stock Options Activity

						Weighted
		Number of				average
		shares				exercise
		outstanding				price
		(in thousands)
Options Outstanding, December 31, 2019			181			$	2.24
Options granted			875				1.14
Options exercised			—				—
Options forfeited or expired			—				—
Options Outstanding, December 31, 2020			1,056			$	1.33
Options granted			850				1.07
Options exercised
Options forfeited or expired			(451	)			1.52
Options Outstanding, December 31, 2021			1,455			$	1.12

Summary of Unvested Restricted Awards

						Weighted
						average
						grant date
		Shares				fair value
		(in thousands)
Total nonvested restricted stock at December 31, 2019			1,153			$	2.89
Granted			76				1.50
Vested			(536	)			2.77
Forfeited			(272	)			3.32
Total nonvested restricted stock at December 31, 2020			421			$	3.05
Granted			96				1.29
Vested			(196	)			2.71
Forfeited			(82	)			3.71
Total nonvested restricted stock at December 31, 2021			239			$	2.39

Summary of Significant Ranges of Outstanding and Exercisable Stock Options

												Weighted
								Number of shares				Average				Weighted				Number of shares				Weighted
Range of								Outstanding				Remaining				Average				Exercisable				Average
Exercise Prices								as of 12/31/2021				Contractual Term				Exercise Price				as of 12/31/2021				Exercise Price
$	1.07			$	1.07				849,890			$	6.92			$	1.07			—				$	—
$	1.14			$	1.14				580,528			$	5.92			$	1.14				290,261			$	1.14
$	2.24			$	2.24				25,000			$	0.45			$	2.24				25,000			$	2.24

		Number of shares				Weighted average exercise price
Options exercisable as of December 31, 2021			315,261			$	1.23
Options vested and expected to vest as of December 31, 2021			1,455,418			$	1.12

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- Definition

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