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Other Current Assets
 3 Months Ended
Mar. 31, 2020
Other Current Assets Disclosure [Abstract]  
Other Current Assets [Text Block]
Other Current Assets

Other current assets consisted of:
 
As of 
March 31, 
2020
 
As of December 31, 2019
Prepaid expenses
$
197

 
$
234

Sales and use taxes
159

 
173

Other
180

 
141

Other current assets
$
536

 
$
548