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8. Leases (Tables)
3 Months Ended
Mar. 31, 2019
Leases [Abstract]  
Future maturities of lease liabilities
Year  Operating Leases 
Nine months ended December 31, 2019  $428 
2020   294 
2021   219 
2022   181 
2023   63 
Thereafter   4 
Total lease payments   1,189 
Less: Interest   (83)
Present value of lease liabilities  $1,106