Annual report pursuant to Section 13 and 15(d)

Details of Certain Consolidated Balance Sheet Accounts - Schedule of Property and Equipment, Net (Details)

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Details of Certain Consolidated Balance Sheet Accounts - Schedule of Property and Equipment, Net (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Property Plant And Equipment [Line Items]    
Property, plant and equipment, gross $ 28,675 $ 20,349
Accumulated depreciation and amortization (12,171) (8,753)
Property and equipment, net 16,504 11,596
Deployed Equipment    
Property Plant And Equipment [Line Items]    
Property, plant and equipment, gross 24,767 17,091
Computer Equipment    
Property Plant And Equipment [Line Items]    
Property, plant and equipment, gross 1,272 1,123
Software    
Property Plant And Equipment [Line Items]    
Property, plant and equipment, gross 1,239 312
Furniture and Fixtures    
Property Plant And Equipment [Line Items]    
Property, plant and equipment, gross 210 165
Leasehold Improvements    
Property Plant And Equipment [Line Items]    
Property, plant and equipment, gross 234 202
Construction in Progress    
Property Plant And Equipment [Line Items]    
Property, plant and equipment, gross $ 953 $ 1,456