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Revenue - Disaggregated by Geographic Region (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2019
USD ($)
region
Dec. 31, 2018
USD ($)
Disaggregation of Revenue    
Number of primary geographic regions | region 3  
Revenue $ 37,503 $ 49,417
North America    
Disaggregation of Revenue    
Revenue 8,690 9,124
EMEA    
Disaggregation of Revenue    
Revenue 8,720 11,175
APJ    
Disaggregation of Revenue    
Revenue $ 20,093 $ 29,118