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Supplemental Cash Flow Information (Detail) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Supplemental disclosure of cash flow information:    
Cash paid for interest $ 11,003 $ 2,695
Cash paid for taxes 2,527 8,675
Non-cash investing activities:    
Translation gain (loss) adjustment $ (1,985) $ 7,534