ORDINARY SHARE AND SHARE INCENTIVE PLANS (Tables)

12 Months Ended

Dec. 31, 2020

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:	2020			2016
Expected term in years	4.25				4.75
Weighted average risk-free interest rate		0.30	%		1.30	%
Expected dividend rate		0	%		0	%
Volatility		41.72	%		51.6	%

Summary of the Stock-based Compensation Expense Recognized in the Company's Consolidated Statement of Operations

	Years Ended December 31,
	2020		2019
	(in thousands)
Cost of net sales	$	89	$	136
Selling, general and administrative	360		985
Research and development	254		278
Total	$	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, 2018		206		$	2.24
Options granted		—			—
Options exercised		(25	)	2.24
Options forfeited or expired		—		—
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

Summary of Unvested Restricted Awards

				Weighted
				average
				grant date
	Shares			fair value
	(in thousands)
Total nonvested restricted stock at December 31, 2018		1,306		$	2.77
Granted		407		3.23
Vested		(494	)	2.76
Forfeited		(66	)	3.63
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

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 12/31/2020		Contractual Term	Exercise Price		as of 12/31/2020		Exercise Price
$	1.14	$	1.14		875,384	6.92	$	1.14	—		$	—
$	2.24	$	2.24		181,450	1.15	$	2.24		181,450	$	2.24

	Number of shares		Weighted average exercise price
Options exercisable as of December 31, 2020		1,056,834	$	1.33
Options vested and expected to vest as of December 31, 2020		181,450	$	2.24