Fair Value Measurements - Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Temporary Equity
Redeemable noncontrolling interests	$ (26,934)	$ (28,885)
Foreign Exchange Contract [Member] | Other Assets [Member]
Assets
Foreign currency exchange contracts	715	768
Foreign Exchange Contract [Member] | Other Liabilities [Member]
Liabilities
Foreign currency exchange contracts	(1,010)	(1,037)
Level 1 [Member]
Temporary Equity
Redeemable noncontrolling interests	0	0
Level 1 [Member] | Foreign Exchange Contract [Member] | Other Assets [Member]
Assets
Foreign currency exchange contracts	0	0
Level 1 [Member] | Foreign Exchange Contract [Member] | Other Liabilities [Member]
Liabilities
Foreign currency exchange contracts	0	0
Level 2 [Member]
Temporary Equity
Redeemable noncontrolling interests	0	0
Level 2 [Member] | Foreign Exchange Contract [Member] | Other Assets [Member]
Assets
Foreign currency exchange contracts	715	768
Level 2 [Member] | Foreign Exchange Contract [Member] | Other Liabilities [Member]
Liabilities
Foreign currency exchange contracts	(1,010)	(1,037)
Level 3 [Member]
Temporary Equity
Redeemable noncontrolling interests	(26,934)	(28,885)
Level 3 [Member] | Foreign Exchange Contract [Member] | Other Assets [Member]
Assets
Foreign currency exchange contracts	0	0
Level 3 [Member] | Foreign Exchange Contract [Member] | Other Liabilities [Member]
Liabilities
Foreign currency exchange contracts	$ 0	$ 0