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Segment Reporting and Concentrations (Details) - USD ($)
$ in Thousands

12 Months Ended

Dec. 31, 2020

Dec. 31, 2019

Dec. 31, 2018

Segment reporting information

Revenues

$ 58,240

$ 55,858

Income (loss) before provision for income taxes

1,045

(1,068)

Total assets

57,254

49,497

Goodwill

2,150

2,108

$ 2,050

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^[1]

1,045

(1,068)

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Segment reporting information

Income (loss) before provision for income taxes

^[2]

1,045

(1,068)

DDS [Member]

Segment reporting information

Revenues

41,983

41,172

Total assets

27,767

23,115

DDS [Member] | Before Intersegment Eliminations [Member]

Segment reporting information

Income (loss) before provision for income taxes

^[1]

1,260

944

DDS [Member] | After Intersegment Eliminations [Member]

Segment reporting information

Income (loss) before provision for income taxes

^[2]

980

683

Synodex [Member]

Segment reporting information

Revenues

4,828

3,942

Total assets

457

675

Synodex [Member] | Before Intersegment Eliminations [Member]

Segment reporting information

Income (loss) before provision for income taxes

^[1]

357

(129)

Synodex [Member] | After Intersegment Eliminations [Member]

Segment reporting information

Income (loss) before provision for income taxes

^[2]

536

40

Agility [Member]

Segment reporting information

Revenues

11,429

10,744

Total assets

29,030

25,707

Goodwill

2,150

2,108

Agility [Member] | Before Intersegment Eliminations [Member]

Segment reporting information

Income (loss) before provision for income taxes

^[1]

(572)

(1,883)

Agility [Member] | After Intersegment Eliminations [Member]

Segment reporting information

Income (loss) before provision for income taxes

^[2]

$ (471)

$ (1,791)

[1]	Before elimination of any inter-segment profits
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