Investment in Joint Venture - Summarized Activity Related to Investment in Joint Venture (Detail) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Equity Method Investments [Roll Forward]
Beginning Balance	$ 21,755
Our share of cumulative earnings	(271)	$ 269
Ending Balance	21,120
Joint Venture
Equity Method Investments [Roll Forward]
Beginning Balance	21,755
Our share of cumulative earnings	(271)
Foreign currency translation gain	(364)
Ending Balance	$ 21,120

Amount of income (loss) for proportionate share of equity method investee's income (loss).

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