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 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers $ 7,626 $ 6,654 $ 12,457 $ 13,365
North America        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 5,017 4,606 7,827 9,423
Europe        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 1,465 1,863 3,075 3,608
Asia        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 1,144 185 1,555 334
Software licenses and appliances        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 2,867 929 3,318 2,149
Subscription, maintenance and support        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 4,122 5,110 8,160 9,948
Professional services and other        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 637 615 979 1,268
Total service        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers $ 4,759 $ 5,725 $ 9,139 $ 11,216