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Segment Reporting and Concentrations (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Segment reporting information          
Revenues $ 17,450 $ 14,553 $ 50,466 $ 42,946  
Income (loss) before provision for income taxes (519) 143 53 (39)  
Total assets 58,833   58,833   $ 57,254
Goodwill 2,143   2,143   2,150
Before Intersegment Eliminations [Member]          
Segment reporting information          
Income (loss) before provision for income taxes (519) 143 53 (39)  
After Intersegment Eliminations [Member]          
Segment reporting information          
Income (loss) before provision for income taxes (519) 143 53 (39)  
DDS [Member]          
Segment reporting information          
Revenues 13,237 10,526 37,997 30,793  
Total assets 29,640   29,640   27,767
DDS [Member] | Before Intersegment Eliminations [Member]          
Segment reporting information          
Income (loss) before provision for income taxes 1,608 4 3,988 226  
DDS [Member] | After Intersegment Eliminations [Member]          
Segment reporting information          
Income (loss) before provision for income taxes 1,509 (64) 3,740 27  
Synodex [Member]          
Segment reporting information          
Revenues 983 1,197 2,888 3,680  
Total assets 714   714   457
Synodex [Member] | Before Intersegment Eliminations [Member]          
Segment reporting information          
Income (loss) before provision for income taxes (657) 79 (878) 356  
Synodex [Member] | After Intersegment Eliminations [Member]          
Segment reporting information          
Income (loss) before provision for income taxes (584) 124 (711) 487  
Agility [Member]          
Segment reporting information          
Revenues 3,230 2,830 9,581 8,473  
Total assets 28,479   28,479   29,030
Goodwill 2,143   2,143   $ 2,150
Agility [Member] | Before Intersegment Eliminations [Member]          
Segment reporting information          
Income (loss) before provision for income taxes (1,470) 60 (3,057) (621)  
Agility [Member] | After Intersegment Eliminations [Member]          
Segment reporting information          
Income (loss) before provision for income taxes $ (1,444) $ 83 $ (2,976) $ (553)