v3.19.2
Fair value measurement - Level 3 Reconciliation (Details) - Level 3
$ in Thousands
6 Months Ended
Jun. 30, 2019
USD ($)
Reconciliation of the beginning and ending balances related to the fair value of contingent consideration  
Balance at beginning of the period $ 961
Payment of contingent consideration 0
Change in fair vale 0
Balance at end of the period $ 961