Organization and Basis of Presentation - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2017 USD ($) Subsidiary VEB / $	Mar. 31, 2016 USD ($) VEB / $	Mar. 10, 2016 VEB / $
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Number of wholly-owned subsidiaries | Subsidiary	3
Remeasurement loss related to Venezuelan subsidiaries	$ (200,000)	$ (1,700,000)
Venezuela [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Remeasurement loss related to Venezuelan subsidiaries		(1,700,000)
Venezuela [Member] | Continuing Operations [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Remeasurement loss related to Venezuelan subsidiaries		$ (1,000,000)
Venezuela [Member] | Continuing Operations [Member] | Maximum [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Remeasurement loss related to Venezuelan subsidiaries	$ (1,000,000)
Venezuela [Member] | CENCOEX [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Exchange rate, translation | VEB / $			6.3
Venezuela [Member] | DIPRO [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Exchange rate, translation | VEB / $			10.0
Venezuela [Member] | DICOM [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Exchange rate, translation | VEB / $	710.3638	272.9123