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Goodwill and Other Intangibles - Changes in Carrying Amount of Goodwill by Segment (Detail)
$ in Thousands
3 Months Ended
Mar. 31, 2019
USD ($)
Goodwill [Line Items]  
Beginning Balance $ 15,621
Currency translation 110
Additions 9,734
Ending Balance 25,465
USA [Member]  
Goodwill [Line Items]  
Beginning Balance 3,078
Currency translation 0
Ending Balance 3,078
The Americas [Member]  
Goodwill [Line Items]  
Beginning Balance 3,997
Currency translation 57
Ending Balance 4,054
EMEA [Member]  
Goodwill [Line Items]  
Beginning Balance 1,355
Currency translation (12)
Additions 9,734
Ending Balance 11,077
Asia-Pacific [Member]  
Goodwill [Line Items]  
Beginning Balance 7,191
Currency translation 65
Ending Balance $ 7,256