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7. Leases (Tables)
12 Months Ended
Dec. 31, 2020
Leases [Abstract]  
Lease costs
    December 31,  
    2020     2019  
Operating lease cost   $ 610     $ 573  
Short-term lease cost     2       2  
Variable lease cost     129       128  
Total lease cost   $ 741     $ 703  
Supplemental cash flow information
    December 31,  
    2020     2019  
Cash paid for amounts included in the measurement of lease liabilities:            
 Operating cash flows (fixed payments)   $ 521     $ 522  
 Operating cash flow (liability reduction)     367       369  
                 
                 
ROU assets obtained in exchange for lease obligations:                
   Operating leases     454       2,840  

 

Other information related to operating leases was as follows:

 

   

December 31,

2020

 
Weighted average remaining lease term (in years)     5.99  
Weighted average discount rate     5.50 %

 

Schedule of future minimum rental payments
   

Year ending

December 31,

 
2021   $ 683  
2022     579  
2023     592  
2024     604  
2025     615  
Thereafter     722  
Total payments     3,795  
Less: imputed interest     568  
Total liability   $ 3,227