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Business Combination - Schedule of Preliminary Purchase Price Allocation (Details) - USD ($)
$ in Thousands
9 Months Ended
Aug. 31, 2015
Sep. 30, 2015
Dec. 31, 2014
Business Combination      
Goodwill   $ 43,381 $ 30,739
Less: Contingent consideration   (11,200) $ 0
Ecolink      
Business Combination      
Cash and cash equivalents   685  
Accounts receivable   375  
Inventories   1,412  
Prepaid expenses and other current assets   253  
Property, plant and equipment   16  
Non-interest bearing liabilities   (1,557)  
Net tangible assets acquired   1,184  
Goodwill   12,781  
Total purchase price   24,745  
Noncontrolling interest   (378)  
Net purchase price   24,367  
Less: Contingent consideration $ (11,200) (11,200)  
Cash paid 13,167 13,167  
Ecolink | Trade name      
Business Combination      
Finite-lived intangible assets $ 400 400  
Estimated Lives 7 years    
Ecolink | Developed Technology      
Business Combination      
Finite-lived intangible assets $ 9,080 9,080  
Ecolink | Customer relationships      
Business Combination      
Finite-lived intangible assets $ 1,300 $ 1,300  
Estimated Lives 5 years    
Ecolink | Minimum | Property, plant and equipment      
Business Combination      
Estimated Lives 1 year    
Ecolink | Minimum | Developed Technology      
Business Combination      
Estimated Lives 4 years    
Ecolink | Maximum | Property, plant and equipment      
Business Combination      
Estimated Lives 4 years    
Ecolink | Maximum | Developed Technology      
Business Combination      
Estimated Lives 14 years