Quarterly report pursuant to Section 13 or 15(d)

Goodwill And Intangible Assets (Schedule of Changes in Carrying Amount of Goodwill) (Details)

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Goodwill And Intangible Assets (Schedule of Changes in Carrying Amount of Goodwill) (Details) - USD ($)
 12 Months Ended
Dec. 31, 2020
Jun. 30, 2021
Nov. 03, 2020
May 14, 2020
Goodwill [Roll Forward]        
January 1, 2020      
Acquisition 2,086,000      
Ending Balance 2,086,393      
Goodwill, Impaired, Accumulated Impairment Loss [Abstract]        
Gross goodwill   $ 2,086,000    
Accumulated impairment loss      
Balance at June 30, 2021 2,086,393 2,086,393    
Ecessa Corporation [Member]        
Goodwill [Roll Forward]        
January 1, 2020      
Acquisition 1,341,000      
Ending Balance 1,341,000      
Goodwill, Impaired, Accumulated Impairment Loss [Abstract]        
Gross goodwill   1,341,000    
Accumulated impairment loss      
Balance at June 30, 2021 1,341,000 1,341,000   $ 1,341,000
IVDesk Minnesota, Inc. [Member]        
Goodwill [Roll Forward]        
January 1, 2020      
Acquisition 745,000      
Ending Balance 745,000      
Goodwill, Impaired, Accumulated Impairment Loss [Abstract]        
Gross goodwill   745,000    
Accumulated impairment loss      
Balance at June 30, 2021 $ 745,000 $ 745,000 $ 745,000