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Reportable Segments (Details) - Schedule of segments commencing from the date of acquisitions - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Reportable Segments (Details) - Schedule of segments commencing from the date of acquisitions [Line Items]      
Revenues $ 23,374 $ 22,664 $ 18,135
Operating income 5,463 5,040 $ 5,350
Billing and Related Services [Member]      
Reportable Segments (Details) - Schedule of segments commencing from the date of acquisitions [Line Items]      
Revenues 14,628 16,547  
Operating income 4,412 4,254  
Messaging [Member]      
Reportable Segments (Details) - Schedule of segments commencing from the date of acquisitions [Line Items]      
Revenues 8,746 6,117 [1]  
Operating income $ 1,051 $ 786 [1]  
[1] The results of operations reported for the year ended December 31, 2019, includes the results of operations of Messaging commencing the second quarter of 2019 (see Note 1a(3)).