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Segment Reporting and Concentrations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment reporting information
Revenues	$ 55,858	$ 57,418
Income (loss) before provision for income taxes	(528)	1,562
Total assets	49,746	44,940
Goodwill	2,108	2,050	$ 2,832
Before Intersegment Eliminations [Member]
Segment reporting information
Income (loss) before provision for income taxes	(528)	1,562
After Intersegment Eliminations [Member]
Segment reporting information
Income (loss) before provision for income taxes	(528)	1,562
DDS [Member]
Segment reporting information
Revenues	41,172	43,546
Total assets	23,196	21,223
DDS [Member] \| Before Intersegment Eliminations [Member]
Segment reporting information
Income (loss) before provision for income taxes	1,320	3,625
DDS [Member] \| After Intersegment Eliminations [Member]
Segment reporting information
Income (loss) before provision for income taxes	1,059	3,391
Synodex [Member]
Segment reporting information
Revenues	3,942	4,063
Total assets	675	787
Synodex [Member] \| Before Intersegment Eliminations [Member]
Segment reporting information
Income (loss) before provision for income taxes	(129)	284
Synodex [Member] \| After Intersegment Eliminations [Member]
Segment reporting information
Income (loss) before provision for income taxes	40	446
Agility [Member]
Segment reporting information
Revenues	10,744	9,809
Total assets	25,875	22,930
Goodwill	2,108	2,050
Agility [Member] \| Before Intersegment Eliminations [Member]
Segment reporting information
Income (loss) before provision for income taxes	(1,719)	(2,347)
Agility [Member] \| After Intersegment Eliminations [Member]
Segment reporting information
Income (loss) before provision for income taxes	$ (1,627)	$ (2,275)