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8. Leases (Tables)
6 Months Ended
Jun. 30, 2019
Leases [Abstract]  
Future maturities of lease liabilities
Year   Operating Leases 
Six months ended December 31, 2019   $289 
2020    303 
2021    227 
2022    190 
2023    71 
Thereafter    7 
Total lease payments    1,087 
Less: Interest    (74)
Present value of lease liabilities   $1,013