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CREDIT RISK AND CONCENTRATION - Additional Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Concentration Risk |  |  |  |  |  |
Cash and cash equivalents |  |  | $ 54,517 | $ 53,797 |  |
Increase or decrease in interest rates of short-term investments that will not significantly affect the fair value of investment portfolio (as a percent) |  |  | 10.00% |  |  |
Net sales | [1] |  | $ 14,052 | 15,921 | $ 24,310 |
China |  |  |  |  |  |
Concentration Risk |  |  |  |  |  |
Net sales |  |  | 1,735 | 1,858 |  | $ 2,286
Cash and Cash Equivalents | Countries Other than US | Credit Concentration Risk |  |  |  |  |  |
Concentration Risk |  |  |  |  |  |
Cash and cash equivalents |  |  | $ 43,200 | $ 50,100 |  |
Accounts Receivable | Customer Concentration Risk | Customer A |  |  |  |  |  |
Concentration Risk |  |  |  |  |  |
Concentration of risk (as a percent) |  |  | 0.00% | 0.00% |  |
Accounts Receivable | Customer Concentration Risk | Customer B |  |  |  |  |  |
Concentration Risk |  |  |  |  |  |
Concentration of risk (as a percent) |  |  | 88.00% | 91.00% |  |
Net sales |  |  | $ 23,000 |  |  |
Accounts Receivable | Customer Concentration Risk | Customer B | Subsequent Event |  |  |  |  |  |
Concentration Risk |  |  |  |  |  |
Net sales |  | $ 3,000 |  |  |  |
Subsidiaries | China |  |  |  |  |  |
Concentration Risk |  |  |  |  |  |
Cash and cash equivalents |  |  | 13,500 | $ 12,200 |  |
Subsidiaries | Cash and Cash Equivalents | China | Credit Concentration Risk |  |  |  |  |  |
Concentration Risk |  |  |  |  |  |
Cash and cash equivalents |  |  | $ 13,500 | $ 12,200 |  |
[1] | Revenue recognized for the years ended December 31, 2022, 2021 and 2020 that was included in deferred revenue (including current and non-current) and customer advances as of the beginning of each year was $0.3 million, $0.4 million and $1.2 million, respectively.

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