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Accrued Expenses (Tables)
12 Months Ended
Dec. 31, 2020
Payables and Accruals [Abstract]  
Schedule of accrued expenses
Accrued expenses consist of the following:
Year ended December 31,
20202019
Employee compensation and benefits$620 $669 
Leased facilities188 51 
Professional services235 327 
Other254 279 
Total accrued expenses$1,297 $1,326