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Revenue Recognition (Tables)
 3 Months Ended
Mar. 31, 2020
Revenue from Contract with Customer [Abstract]  
Schedule of Revenues Disaggregated by Revenue

Revenue attributable to each of our identified revenue categories is disaggregated in the table below (amounts in thousands).

 

    Three months ended March 31, 2020     Three months ended March 31, 2019  
    Verification and Certification Segment     Software Sales and Related Consulting Segment     Eliminations and Other     Consolidated Totals     Verification and Certification Segment     Software Sales and Related Consulting Segment     Eliminations and Other     Consolidated Totals  
Revenues:                                                                
Verification and certification service revenue   $ 2,803     $ -     $ -     $ 2,803     $ 2,812     $ -     $ -     $ 2,812  
Product sales     725       -       -       725       641       -       -       641  
Software license, maintenance and support services revenue     -       233       (90 )     143       -       344       (49 )     295  
Software-related consulting service revenue     -       265       (24 )     241       -       221       (14 )     207  
Total revenues   $ 3,528     $ 498     $ (114 )   $ 3,912     $ 3,453     $ 565     $ (63 )   $ 3,955  
Schedule of Changes in Contract Liabilities

The following table reflects the changes in our contract liabilities during the three month period ended March 31, 2020 (amounts in thousands):

 

Deferred revenue:        
Unearned revenue January 1, 2020   $ 797  
Unearned billings     1,235  
Revenue recognized     (619 )
Unearned revenue March 31, 2020   $ 1,413