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Significant Customers, Concentrations of Credit Risk, and Geographic Information (Details) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2022 USD ($) | Jun. 30, 2021 USD ($) | Jun. 30, 2022 USD ($) segment customer | Jun. 30, 2021 USD ($) | Dec. 31, 2021 USD ($) customer
SIGNIFICANT CUSTOMERS, CONCENTRATION OF CREDIT RISK AND GEOGRAPHIC INFORMATION |  |  |  |  |
Number of operating segments | segment |  |  | 1 |  |
Revenue, net | $ 2,040 | $ 2,064 | $ 4,031 | $ 3,632 |
Allowance for doubtful accounts | $ 0 |  | $ 0 |  | $ 0
Net revenue | Customer Concentration Risk | Customer A |  |  |  |  |
SIGNIFICANT CUSTOMERS, CONCENTRATION OF CREDIT RISK AND GEOGRAPHIC INFORMATION |  |  |  |  |
Concentration risk (as a percent) | 24.00% | 14.00% | 30.00% |  |
Net revenue | Customer Concentration Risk | Customer B |  |  |  |  |
SIGNIFICANT CUSTOMERS, CONCENTRATION OF CREDIT RISK AND GEOGRAPHIC INFORMATION |  |  |  |  |
Concentration risk (as a percent) |  | 22.00% |  | 25.00% |
Net revenue | Customer Concentration Risk | Customer C |  |  |  |  |
SIGNIFICANT CUSTOMERS, CONCENTRATION OF CREDIT RISK AND GEOGRAPHIC INFORMATION |  |  |  |  |
Concentration risk (as a percent) | 25.00% | 10.00% | 20.00% |  |
Net revenue | Customer Concentration Risk | Customer D |  |  |  |  |
SIGNIFICANT CUSTOMERS, CONCENTRATION OF CREDIT RISK AND GEOGRAPHIC INFORMATION |  |  |  |  |
Concentration risk (as a percent) |  |  |  | 12.00% |
Net revenue | Geographic Concentration Risk |  |  |  |  |
SIGNIFICANT CUSTOMERS, CONCENTRATION OF CREDIT RISK AND GEOGRAPHIC INFORMATION |  |  |  |  |
Revenue, net | $ 2,040 | $ 2,064 | $ 4,031 | $ 3,632 |
Net revenue | Geographic Concentration Risk | United states |  |  |  |  |
SIGNIFICANT CUSTOMERS, CONCENTRATION OF CREDIT RISK AND GEOGRAPHIC INFORMATION |  |  |  |  |
Revenue, net | 995 | 590 | 1,996 | 860 |
Net revenue | Geographic Concentration Risk | Asia and Middle East |  |  |  |  |
SIGNIFICANT CUSTOMERS, CONCENTRATION OF CREDIT RISK AND GEOGRAPHIC INFORMATION |  |  |  |  |
Revenue, net | 969 | 1,378 | 1,780 | 2,490 |
Net revenue | Geographic Concentration Risk | Europe and other |  |  |  |  |
SIGNIFICANT CUSTOMERS, CONCENTRATION OF CREDIT RISK AND GEOGRAPHIC INFORMATION |  |  |  |  |
Revenue, net | 76 | $ 96 | $ 255 | $ 282 |
Accounts receivable | Credit Concentration Risk |  |  |  |  |
SIGNIFICANT CUSTOMERS, CONCENTRATION OF CREDIT RISK AND GEOGRAPHIC INFORMATION |  |  |  |  |
Number of customers | customer |  |  | 3 |  | 3
Accounts receivable | Credit Concentration Risk | Customer One |  |  |  |  |
SIGNIFICANT CUSTOMERS, CONCENTRATION OF CREDIT RISK AND GEOGRAPHIC INFORMATION |  |  |  |  |
Concentration risk (as a percent) |  |  | 28.00% |  | 39.00%
Accounts receivable | Credit Concentration Risk | Customer Two |  |  |  |  |
SIGNIFICANT CUSTOMERS, CONCENTRATION OF CREDIT RISK AND GEOGRAPHIC INFORMATION |  |  |  |  |
Concentration risk (as a percent) |  |  | 21.00% |  | 18.00%
Accounts receivable | Credit Concentration Risk | Customer Three |  |  |  |  |
SIGNIFICANT CUSTOMERS, CONCENTRATION OF CREDIT RISK AND GEOGRAPHIC INFORMATION |  |  |  |  |
Concentration risk (as a percent) |  |  | 11.00% |  | 12.00%
Assets | Geographic Concentration Risk |  |  |  |  |
SIGNIFICANT CUSTOMERS, CONCENTRATION OF CREDIT RISK AND GEOGRAPHIC INFORMATION |  |  |  |  |
Total long-lived assets | 648 |  | $ 648 |  | $ 712
Assets | Geographic Concentration Risk | United states |  |  |  |  |
SIGNIFICANT CUSTOMERS, CONCENTRATION OF CREDIT RISK AND GEOGRAPHIC INFORMATION |  |  |  |  |
Total long-lived assets | 387 |  | 387 |  | 536
Assets | Geographic Concentration Risk | Asia |  |  |  |  |
SIGNIFICANT CUSTOMERS, CONCENTRATION OF CREDIT RISK AND GEOGRAPHIC INFORMATION |  |  |  |  |
Total long-lived assets | $ 261 |  | $ 261 |  | $ 176

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