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, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Noncontrolling Interest [Abstract]        
Non-controlling interests, beginning of period     $ 48,178 $ 58,858
Net earnings attributable to non-controlling interests $ 11,432 $ 7,232 33,361 20,093
Foreign currency translation adjustment     (812) (2,323)
Capital contributions from non-controlling interests     5,707 485
Capital distributions to non-controlling interests     (7,945) (37,090)
Non-controlling interests, end of period $ 78,489 $ 40,023 $ 78,489 $ 40,023