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Revenue Recognition (Tables)
 3 Months Ended
Mar. 31, 2023
Revenue from Contract with Customer [Abstract]  
Schedule of Revenue Attributable to Each of Our Identified Revenue Categories

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

 

                                         
   Three months ended March 31, 2023   Three months ended March 31, 2022 
   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  $3,806   $   -   $      -   $3,806   $3,784   $-   $-   $3,784 
Product sales   971    -    -    971    1,007    -    -    1,007 
Software and related consulting revenue   -    490    -    490    -    1,365    -    1,365 
Total revenues  $4,777   $490   $-   $5,267   $4,791   $1,365   $-   $6,156 

 
Schedule of Changes in Contract Liabilities

The following table reflects the changes in our contract liabilities during the three month period ended March 31, 2023 (amounts in thousands):

 

Deferred revenue:    
Unearned revenue December 31, 2022  $1,278 
Unearned billings   648 
Revenue recognized   (670)
Unearned revenue March 31, 2023  $1,256