Quarterly report pursuant to Section 13 or 15(d)

Equity Attributable to Non-controlling Interest (Detail)

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Equity Attributable to Non-controlling Interest (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Noncontrolling Interest [Line Items]        
Non-controlling interest, Beginning Balance     $ 39,966 $ 37,631
Net earnings attributable to non-controlling interest 596 71 1,290 280
Foreign currency translation adjustment     278 244
Capital contribution by non-controlling interest     2,000 115
Non-controlling interest, Ending Balance $ 43,534 $ 38,270 $ 43,534 $ 38,270