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Other Assets - Schedule of Other Assets (Detail) - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Other Current Assets:    
Prepaid income tax $ 6,482 $ 4,698
Income tax receivable 6,081 10,322
Other 15,640 12,492
Total other current assets 28,203 27,512
Other Assets:    
Deferred tax assets, net 7,583 7,202
Long-term income tax receivable 8,258 8,092
Other 2,037 1,912
Total other assets $ 17,878 $ 17,206