Stockholders' Equity - Components of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Equity [Abstract]
Foreign currency translation adjustments	$ (779)	$ 4,310
Unrealized foreign exchange loss on intercompany long-term loans, net of taxes	(888)	(1,177)
Actuarial gain	451	249
Total accumulated other comprehensive loss	$ (1,216)	$ 3,382

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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