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Fair Value Measurements - Level 3 (Details) - Contingent Liability
$ in Thousands
3 Months Ended
Mar. 31, 2020
USD ($)
Reconciliation of Level 3 liabilities  
Fair value at beginning of period $ 4,769
Payments 0
Change in fair value 105
Currency translation adjustment (92)
Fair value at end of period $ 4,782