Annual report pursuant to Section 13 and 15(d)

Significant Customers and Geographic Data Property and Equipment by Region (Details)

v3.19.3.a.u2
Significant Customers and Geographic Data Property and Equipment by Region (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Jan. 01, 2019
Dec. 31, 2018
Property, Plant and Equipment [Line Items]      
Property and equipment, net of depreciation $ 596 $ 669 $ 545
Geography Concentration Risk | Property, Plant and Equipment      
Property, Plant and Equipment [Line Items]      
Property and equipment, net of depreciation 596   545
Geography Concentration Risk | Property, Plant and Equipment | United States      
Property, Plant and Equipment [Line Items]      
Property and equipment, net of depreciation 442   515
Geography Concentration Risk | Property, Plant and Equipment | United Kingdom      
Property, Plant and Equipment [Line Items]      
Property and equipment, net of depreciation 96   30
Geography Concentration Risk | Property, Plant and Equipment | India      
Property, Plant and Equipment [Line Items]      
Property and equipment, net of depreciation $ 58   $ 0