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11. Fair Value Measurements (Details 3) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2020
Dec. 31, 2019
Fair Value Disclosures [Abstract]    
Beginning balance $ 175 $ 0
Additions   175
Cash payments (41)  
Adjustment (121)  
Ending balance $ 13 $ 175