Comprehensive Income (Loss) Attributable to Noncontrolling Shareholders' Interests (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Equity [Abstract]
Net (loss) income attributable to noncontrolling shareholders' interests	$ (336)	$ 1,720	$ 301	$ 3,120
Other comprehensive (loss) income:
Currency translation adjustments	(1,988)	323	(1,348)	(815)
Comprehensive (loss) income attributable to noncontrolling shareholders’ interests	$ (2,324)	$ 2,043	$ (1,047)	$ 2,305

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income (loss) and other comprehensive income (loss), attributable to noncontrolling interests. Excludes changes in equity resulting from investments by owners and distributions to owners.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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