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Goodwill and Intangible Assets - Changes in Intangible Assets, Net of Accumulated Amortization (Detail) - Jun. 30, 2015 - USD ($)
$ in Thousands
Total
Finite-lived Intangible Assets [Roll Forward]  
Net balance at January 1 $ 31,323
Amortization expense (1,422)
Impairment Loss (723)
Currency translation (704)
Net balance at June 30 $ 28,474