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Summary of Significant Accounting Policies (Details 1) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Intangible Assets [Line Items]    
Intangible Assets, Gross (Excluding Goodwill) $ 172,012 $ 171,772
Accumulated Amortization (60,798) (57,354)
Intangible Assets, Net (Excluding Goodwill) 111,214 114,418
Tradename (indefinite life) [Member]
    
Intangible Assets [Line Items]    
Gross amount, Tradename (indefinite life) 25,004 25,108
Intangible Assets, Net (Excluding Goodwill) 25,004 25,108
Customer Relationships [Member]
    
Intangible Assets [Line Items]    
Gross amount 99,229 98,374
Accumulated Amortization (27,596) (25,313)
Intangible Assets, Net (Excluding Goodwill) 71,633 73,061
Proven technology and patents [Member]
    
Intangible Assets [Line Items]    
Gross amount 42,005 43,233
Accumulated Amortization (30,492) (29,763)
Intangible Assets, Net (Excluding Goodwill) 11,513 13,470
Tradename (finite life) [Member]
    
Intangible Assets [Line Items]    
Gross amount 4,192 4,300
Accumulated Amortization (1,759) (1,619)
Intangible Assets, Net (Excluding Goodwill) 2,433 2,681
Other Intangible Assets [Member]
    
Intangible Assets [Line Items]    
Gross amount 1,582 757
Accumulated Amortization (951) (659)
Intangible Assets, Net (Excluding Goodwill) $ 631 $ 98