Comprehensive (Loss) Income Attributable to Noncontrolling Shareholders' Interests (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Equity [Abstract]
Net income attributable to noncontrolling shareholders' interests	$ 572	$ 437	$ 846	$ 637
Other comprehensive income (loss):
Currency translation adjustments	89	(340)	(455)	640
Comprehensive income attributable to noncontrolling shareholders’ interests	$ 661	$ 97	$ 391	$ 1,277

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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