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11. Fair Value Measurements (Details 1) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Asset acquisition contingent consideration $ 13 $ 175
Level 1    
Asset acquisition contingent consideration 0 0
Level 2    
Asset acquisition contingent consideration 0 0
Level 3    
Asset acquisition contingent consideration $ 13 $ 175