Schedule of Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified				9 Months Ended
Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014 Global Thermoelectric Inc	Sep. 30, 2014 Customer Relationships Global Thermoelectric Inc	Sep. 30, 2014 Order backlog Global Thermoelectric Inc	Sep. 30, 2014 Technology Global Thermoelectric Inc	Sep. 30, 2014 Trade Names Global Thermoelectric Inc
Finite Lived Intangible Assets [Line Items]
Gross Value			$ 9,751	$ 5,457	$ 805	$ 2,773	$ 716
Accumulated Amortization			(1,278)	(230)	(805)	(140)	(103)
Net Value	$ 77,277	$ 83,431	$ 8,473	$ 5,227		$ 2,633	$ 613
Useful Life				12 years	6 months	10 years	3 years 6 months

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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