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Other Current Assets
 6 Months Ended
Jun. 30, 2021
Assets, Current [Abstract]  
Other Current Assets Other Current Assets
Other current assets consisted of:
As of 
June 30, 2021		As of 
December 31, 2020
Sales and use tax$263 $147 
Prepaid expenses248 161 
Other104 148 
Other current assets$615 $456