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Financial instruments (Tables)
9 Months Ended
Sep. 30, 2020
Fair Value Disclosures [Abstract]  
Schedule of fair value measurements
Fair Value Measurement as of September 30, 2020
Level 1
Level 2
Level 3
Total
Liabilities
Contingent consideration
$
— 
$
— 
$
— 
$
— 
Total
$
— 
$
— 
$
— 
$
— 
Fair Value Measurement as of December 31, 2019
Level 1
Level 2
Level 3
Total
Liabilities
Contingent consideration
$
— 
$
— 
$
105 
$
105 
Total
$
— 
$
— 
$
105 
$
105