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Supplemental Cash Flow Information (Detail) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Supplemental disclosure of cash flow information:    
Cash paid for interest $ 2,423 $ 2,421
Cash paid for taxes 6,288 4,406
Non-cash investing activities:    
Translation adjustment $ 1,507 $ (1,732)