ORDINARY SHARE AND SHARE INCENTIVE PLANS (Tables)

12 Months Ended

Dec. 31, 2023

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:	2023			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,
	2023		2022		2021
	(in thousands)
Cost of net sales	$	28	$	97	$	87
Selling, general and administrative		151		258		236
Research and development		114		248		181
Total	$	293	$	603	$	504

2017 Equity Incentive Plan

Summary of Stock Options Activity

				Weighted
	Number of			average
	shares			exercise
	outstanding			price
	(in thousands)
Options Outstanding, December 31, 2021		364		$	4.47
Options granted		—			—
Options exercised		(4	)		4.52
Options forfeited or expired		(13	)		6.59
Options Outstanding, December 31, 2022		347		$	4.39
Options granted		—			—
Options exercised		(1	)		4.28
Options cancelled		(8	)		4.45
Options forfeited or expired		(16	)		4.44
Options Outstanding, December 31, 2023		322		$	4.39

Summary of Unvested Restricted Awards

				Weighted
				average
				grant date
	Shares			fair value
	(in thousands)
Total nonvested restricted stock at December 31, 2021		59		$	9.56
Granted		29			3.97
Vested		(44	)		9.66
Forfeited		(1	)		14.82
Total nonvested restricted stock at December 31, 2022		43		$	5.65
Granted		30			3.79
Vested		(38	)		5.32
Forfeited		—			—
Total nonvested restricted stock at December 31, 2023		35		$	3.28

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 12/31/2023		Contractual Term		Exercise Price		as of 12/31/2023		Exercise Price
$	4.28	$	4.28		194,777	4.92		$	4.28		194,777	$	4.28
$	4.56	$	4.56		127,019		3.92	$	4.56		127,019	$	4.56

	Number of shares		Weighted average exercise price
Options exercisable as of December 31, 2023		321,796	$	4.39
Options vested and expected to vest as of December 31, 2023		321,796	$	4.39