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Significant Accounting Policies - Schedule of Revenue Recognized from the Sources of Software Products and Services Revenue (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Significant Accounting Policies [Line Items]    
Total software revenue $ 26,174 $ 20,741
On Premise Software    
Significant Accounting Policies [Line Items]    
Total software revenue 15,600 13,023
Hosted Software    
Significant Accounting Policies [Line Items]    
Total software revenue 2,133 1,711
Software Maintenance    
Significant Accounting Policies [Line Items]    
Total software revenue 3,537 2,589
Professional Services    
Significant Accounting Policies [Line Items]    
Total software revenue 2,542 1,282
Software Products and Services    
Significant Accounting Policies [Line Items]    
Total software revenue $ 23,812 $ 18,605