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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