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Commitments and Contingencies - Summary of Warranty Provision (Details)
$ in Thousands
6 Months Ended
Jun. 30, 2019
USD ($)
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]  
Balance - Beginning of the year $ 3,911
Provision for new warranty claims 1,038
Change in provision for preexisting warranty claims (47)
Deduction for payments made (1,587)
Currency translation adjustment 11
Balance - End of period $ 3,326