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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 |

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- Definition Foreign exchange rate used to translate amounts denominated in functional currency to reporting currency. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6897108&loc=SL6897125-166521 + Details
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