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Acquisition - Consideration and Allocation (Details) - USD ($)
$ in Thousands
 1 Months Ended 9 Months Ended
Mar. 06, 2015
Nov. 20, 2014
Mar. 31, 2015
Sep. 30, 2015
Sep. 30, 2014
Business Acquisition [Line Items]          
Cash paid       $ 2,124 $ 0
ADA Analytics Israel, LLC          
Business Acquisition [Line Items]          
Cash paid $ 2,360 $ 200 $ 2,400    
Accrued liabilities 10        
Contingent consideration 451        
Total fair value of liabilities assumed 461        
Total purchase consideration 2,821        
Receivables 360        
Property and equipment and other 82        
Intangibles - in process research and development 2,379        
Total $ 2,821