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Segment Reporting and Concentrations (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2015
Segment Reporting Information [Line Items]          
Revenues $ 16,060 $ 15,135 $ 47,400 $ 43,000  
Income (loss) before provision for income taxes (2,520) 736 (3,723) (1,882)  
Total assets 50,913   50,913   $ 51,237
Before Intersegment Eliminations [Member]          
Segment Reporting Information [Line Items]          
Income (loss) before provision for income taxes [1] (2,520) 736 (3,723) (1,882)  
After Intersegment Eliminations [Member]          
Segment Reporting Information [Line Items]          
Income (loss) before provision for income taxes [2] (2,520) 736 (3,723) (1,882)  
DDS [Member]          
Segment Reporting Information [Line Items]          
Revenues 12,052 13,474 38,928 38,035  
Total assets 29,505   29,505   41,842
DDS [Member] | Before Intersegment Eliminations [Member]          
Segment Reporting Information [Line Items]          
Income (loss) before provision for income taxes [1] (1,132) 2,534 1,195 3,596  
DDS [Member] | After Intersegment Eliminations [Member]          
Segment Reporting Information [Line Items]          
Income (loss) before provision for income taxes [2] (1,882) 1,892 (980) 1,755  
IADS [Member]          
Segment Reporting Information [Line Items]          
Revenues 1,028 484 3,090 1,434  
Total assets 735   735   1,026
IADS [Member] | Before Intersegment Eliminations [Member]          
Segment Reporting Information [Line Items]          
Income (loss) before provision for income taxes [1] (1,296) (1,496) (3,754) (4,590)  
IADS [Member] | After Intersegment Eliminations [Member]          
Segment Reporting Information [Line Items]          
Income (loss) before provision for income taxes [2] (553) (861) (1,598) (2,773)  
MIS [Member]          
Segment Reporting Information [Line Items]          
Revenues 2,980 1,177 5,382 3,531  
Total assets 20,673   20,673   $ 8,369
MIS [Member] | Before Intersegment Eliminations [Member]          
Segment Reporting Information [Line Items]          
Income (loss) before provision for income taxes [1] (92) (302) (1,164) (888)  
MIS [Member] | After Intersegment Eliminations [Member]          
Segment Reporting Information [Line Items]          
Income (loss) before provision for income taxes [2] $ (85) $ (295) $ (1,145) $ (864)  
[1] Before elimination of any inter-segment profits
[2] After elimination of any inter-segment profits