Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Equity Attributable to Noncontrolling Interests (Detail)

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Stockholders' Equity - Equity Attributable to Noncontrolling Interests (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Noncontrolling Interest [Abstract]        
Non-controlling interests, beginning of period     $ 58,858 $ 49,598
Net earnings attributable to non-controlling interests $ 7,232 $ 3,956 20,093 9,450
Foreign currency translation adjustment     (2,323) (138)
Capital contribution by non-controlling interests     485 83
Capital distribution to non-controlling interests     (37,090) (3,250)
Non-controlling interests, end of period $ 40,023 $ 55,743 $ 40,023 $ 55,743