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Supplemental Cash Flow Information (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Supplemental disclosure of cash flow information:      
Cash paid for interest $ 5,498 $ 6,877 $ 6,893
Cash paid for taxes 6,067 10,331 1,198
Non-cash investing activities:      
Translation adjustment $ 3,077 $ (704) $ 1,088