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Segment Reporting and Concentrations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Segment reporting information
Revenues	$ 15,967	$ 14,530
Income (loss) before provision for income taxes	336	125
Total assets	56,291		$ 57,254
Goodwill	2,157		2,150
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Segment reporting information
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Segment reporting information
Income (loss) before provision for income taxes	336	125
DDS [Member]
Segment reporting information
Revenues	11,764	10,409
Total assets	26,948		27,767
DDS [Member] | Before Intersegment Eliminations [Member]
Segment reporting information
Income (loss) before provision for income taxes	654	203
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Segment reporting information
Income (loss) before provision for income taxes	584	133
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Segment reporting information
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Total assets	129		457
Synodex [Member] | Before Intersegment Eliminations [Member]
Segment reporting information
Income (loss) before provision for income taxes	108	196
Synodex [Member] | After Intersegment Eliminations [Member]
Segment reporting information
Income (loss) before provision for income taxes	152	241
Agility [Member]
Segment reporting information
Revenues	3,185	2,839
Total assets	29,214		29,030
Goodwill	2,157		$ 2,150
Agility [Member] | Before Intersegment Eliminations [Member]
Segment reporting information
Income (loss) before provision for income taxes	(426)	(274)
Agility [Member] | After Intersegment Eliminations [Member]
Segment reporting information
Income (loss) before provision for income taxes	$ (400)	$ (249)

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