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6. Prepaid Expenses
6 Months Ended
Jun. 30, 2020
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Prepaid Expenses

Prepaid expenses consisted of the following (in thousands):

 

   

June 30,

2020

   

December 31,

2019

 
Prepaid corporate insurance   $ 121     $ 48  
Prepaid software services and support     134       27  
Other prepaid expenses     67       66  
Total prepaid expenses   $ 322     $ 141