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Acquisition (Details) - Etherios, Inc - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Oct. 31, 2012
Sep. 30, 2013
Business Acquisition [Line Items]    
Total purchase price $ 20,400  
Cash, including cash in escrow 13,700  
Cash acquired 800  
Common stock 6,700  
Amount in escrow 2,350  
Escrow holdback 300  
Escrow cash $ 2,050  
Purchase accounting adjustment decrease   $ 100
Net Tangible Assets purchase accounting adjustment decrease   300
Goodwill, Purchase Accounting Adjustments   200
Goodwill   17,300
Acquisition related costs   $ 200
Maximum    
Business Acquisition [Line Items]    
Escrow cash period 18 months  
Common Stock    
Business Acquisition [Line Items]    
Number of shares 715,571  
Common stock issued per common share $ 9.42