Quarterly report pursuant to Section 13 or 15(d)

Revenue Disaggregation of Revenue (Details)

v3.10.0.1
Revenue Disaggregation of Revenue (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers $ 5,653 $ 7,573 $ 18,110 $ 20,938
North America        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 3,766 5,771 11,593 15,194
Europe        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 1,618 1,566 4,693 5,174
Asia        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 269 236 1,824 570
Software licenses and appliances        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 985 1,822 4,303 3,971
Subscription, maintenance and support        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 4,091 5,113 12,251 15,061
Professional services and other        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 577 638 1,556 1,906
Total service        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers $ 4,668 $ 5,751 $ 13,807 $ 16,967