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ORDINARY SHARE AND SHARE INCENTIVE PLANS (Tables) | 12 Months Ended
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Dec. 31, 2024
Summary of Stock-based Compensation Expense Recognized in Consolidated Statements of Comprehensive Loss |
|  |  | Years Ended December 31, |
|  |  | 2024 |  |  | 2023 |  |  | 2022 |
|  |  | (in thousands) |
Cost of net sales |  | $ |  | — |  |  | $ | 28 |  |  | $ | 97 |
Selling, general and administrative |  |  |  | 117 |  |  |  | 151 |  |  |  | 258 |
Research and development |  |  |  | — |  |  |  | 114 |  |  |  | 248 |
Total |  | $ |  | 117 |  |  | $ | 293 |  |  | $ | 603 |
2017 Equity Incentive Plan |
Summary of Stock Options Activity |
|  |  |  |  | Weighted |
|  | Number of |  |  | average |
|  | shares |  |  | exercise |
|  | outstanding |  |  | price |
|  | (in thousands) |  |  |  |
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 |
Options granted |  |  | — |  |  |  | — |
Options exercised |  |  | — |  |  |  | — |
Options cancelled |  |  | — |  |  |  | — |
Options forfeited or expired |  |  | (8 | ) |  |  | 4.40 |
Options Outstanding, December 31, 2024 |  |  | 314 |  |  | $ | 4.39 |
Summary of Unvested Restricted Awards |
|  |  |  |  | Weighted |
|  |  |  |  | average |
|  |  |  |  | grant date |
|  | Shares |  |  | fair value |
|  | (in thousands) |  |  |  |
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 |
Granted |  |  | 43 |  |  |  | 3.03 |
Vested |  |  | (20 | ) |  |  | 3.79 |
Forfeited |  |  | — |  |  |  | — |
Total nonvested restricted stock at December 31, 2024 |  |  | 58 |  |  | $ | 2.91 |
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 12/31/2024 |  |  | Contractual Term |  |  | Exercise Price |  |  | as of 12/31/2024 |  |  | Exercise Price |
$ | 4.28 |  |  | $ | 4.28 |  |  |  | 190,194 |  |  | 3.92 |  |  | $ | 4.28 |  |  |  | 190,194 |  |  | $ | 4.28 |
$ | 4.56 |  |  | $ | 4.56 |  |  |  | 123,427 |  |  |  | 2.92 |  |  | $ | 4.56 |  |  |  | 123,427 |  |  | $ | 4.56 |
|  | Number of shares |  |  | Weighted average exercise price |
Options exercisable as of December 31, 2024 |  |  | 313,621 |  |  | $ | 4.39 |
Options vested and expected to vest as of December 31, 2024 |  |  | 313,621 |  |  | $ | 4.39 |

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