Accumulated Other Comprehensive Loss - Schedule of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Equity [Abstract]
Foreign currency translation adjustments	$ (18,780)	$ (38,413)
Derivative adjustments	(1,279)	5,299
Total	$ (20,059)	$ (33,114)

Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses.

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Data Type:	xbrli:monetaryItemType
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