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5. Leases (Tables)
12 Months Ended
Dec. 31, 2019
Leases [Abstract]  
Lease expense
   December 31, 2019
    
Operating lease cost  $893 
      
Other information:     
Cash paid for amounts included in the measurement of lease liabilities   850 
Operating cash flows from operating leases   —   
Right-of-use assets obtained in exchange for new lease liabilities - operating leases   8 
Weighted-average remaining lease term - operating leases   7.27 
Weighted-average discount rate - operating leases   3.19%
Maturity analysis of operating lease liabilities
Maturity Analysis of Operating Lease Liabilities:  December 31, 2019
 2020   $823 
 2021    793 
 2022    501 
 2023    393 
 2024    304 
 Thereafter    1,320 
 Total    4,134 
 Less: Imputed Interest    (487)
 Operating Lease Liability   $3,647