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Significant Accounting Policies - Additional Information (Details) $ in Millions | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2017 USD ($) Affiliate | Dec. 31, 2016 USD ($) Affiliate
Significant Accounting Policies [Line Items] |  |
Investments in affiliates | $ | $ 12.0 | $ 30.0
Number of affiliates | Affiliate | 2 | 3
Aerospace Composites Malaysia Sdn. Bhd. |  |
Significant Accounting Policies [Line Items] |  |
Interest in affiliated company, accounted for using equity method of accounting (as a percent) | 50.00% |
Maximum |  |
Significant Accounting Policies [Line Items] |  |
Interest in affiliated company, accounted for using cost method of accounting (as a percent) | 20.00% |

X
- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the cost method of accounting. + References No definition available. + Details
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- Definition Number of affiliates. + References No definition available. + Details
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- Definition Significant accounting policies. + References No definition available. + Details
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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571 + Details
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- Definition The cash outflow associated with the acquisition of or advances to an entity that is related to it but not strictly controlled (for example, an unconsolidated subsidiary, affiliate, and joint venture or equity method investment) or the acquisition of an additional interest in a subsidiary (controlled entity). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585 + Details
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