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

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Investment in Joint Venture - Summarized Activity Related to Investment in Joint Venture (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Equity Method Investments [Roll Forward]
Beginning Balance			$ 26,983
Share of earnings	$ 842	$ 1,136	3,456	$ 1,792
Ending Balance	30,799		30,799
Joint Venture
Equity Method Investments [Roll Forward]
Beginning Balance			26,983
Share of earnings			3,456
Foreign currency translation gain			360
Ending Balance	$ 30,799		$ 30,799