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Organization and Summary of Significant Accounting Policies (Details 4) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Services $ 64,476 $ 54,670
Software and other 5,073 5,451
Total revenue $ 69,549 $ 60,121