Summary of Significant Accounting Policies (Details 1) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Intangible Assets [Line Items]
Finite and Indefinite-Lived Intangible Assets, Gross, Total	$ 172,988	$ 174,573
Total Accumulated Amortization	(62,512)	(61,789)
Intangible Assets, Net (Excluding Goodwill)	110,476	112,784
Tradename (indefinite life) [Member]
Intangible Assets [Line Items]
Gross amount, Tradename (indefinite life)	24,810	24,947
Intangible Assets, Net (Excluding Goodwill)	24,810	24,947
Customer Relationships [Member]
Intangible Assets [Line Items]
Gross amount	96,967	98,325
Accumulated Amortization	(28,258)	(28,159)
Intangible Assets, Net (Excluding Goodwill)	68,709	70,166
Proven technology and patents [Member]
Intangible Assets [Line Items]
Gross amount	45,546	45,588
Accumulated Amortization	(31,127)	(30,761)
Intangible Assets, Net (Excluding Goodwill)	14,419	14,827
Tradename (finite life) [Member]
Intangible Assets [Line Items]
Gross amount	4,115	4,140
Accumulated Amortization	(1,953)	(1,786)
Intangible Assets, Net (Excluding Goodwill)	2,162	2,354
Other Intangible Assets [Member]
Intangible Assets [Line Items]
Gross amount	1,550	1,573
Accumulated Amortization	(1,174)	(1,083)
Intangible Assets, Net (Excluding Goodwill)	$ 376	$ 490

The total accumulated amount of amortization of intangible assets.

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Sum of the gross carrying amount before accumulated amortization of finite-lived intangibles and the carrying amounts (original costs for current and prior period additions adjusted for impairment if any) of indefinite-lived intangibles as of the balance sheet date.

+ References

No definition available.

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

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

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

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Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

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

-Publisher FASB

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-Topic 350

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