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Other Current Assets
 9 Months Ended
Sep. 30, 2021
Assets, Current [Abstract]  
Other Current Assets Other Current Assets
Other current assets consisted of:
As of 
September 30, 2021		As of 
December 31, 2020
Sales and use tax$262 $147 
Prepaid expenses208 161 
Other98 148 
Other current assets$568 $456