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OPERATING SEGMENT AND GEOGRAPHIC INFORMATION (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2013
operating_segments
Dec. 31, 2012
Dec. 31, 2011
Segment Reporting Information [Line Items]                      
Number of operating segments (in operating segments)                 2    
Net Sales $ 6,218 $ 6,646 $ 7,306 $ 7,374 $ 7,292 $ 7,889 $ 9,093 $ 7,206 $ 27,544 $ 31,480 $ 31,971
Gross Profit 2,554 2,851 3,410 3,681 3,544 3,800 4,562 3,104 12,496 15,010 18,437
Net income (loss) before taxes                 (16,041) (8,181) (9,737)
Income tax benefit                 (54) 146 45
Net loss (3,982) (5,552) (2,867) (3,586) (2,314) (2,754) (563) (2,696) (15,987) (8,327) (9,782)
Depreciation/Amortization                 2,748 2,278 2,101
Restructuring Charges                 0 0 41
Interest expense, net                 (642) (888) (958)
Total Assets 30,278       38,791       30,278 38,791 33,562
Goodwill 6,918       6,918       6,918 6,918 6,440
Clinical laboratories
                      
Segment Reporting Information [Line Items]                      
Net Sales                 15,391 19,329 18,318
Gross Profit                 6,820 9,316 10,528
Net income (loss) before taxes                 (12,486) (6,874) (11,370)
Income tax benefit                 0 0 0
Net loss                 (12,486) (6,874) (11,370)
Depreciation/Amortization                 2,467 1,960 1,810
Restructuring Charges                     29
Interest expense, net                 (398) (851) (958)
Total Assets 21,711       29,196       21,711 29,196 23,668
Goodwill 6,918       6,918       6,918 6,918 6,440
Genetic assays and platforms
                      
Segment Reporting Information [Line Items]                      
Net Sales                 12,153 12,151 13,653
Gross Profit                 5,676 5,694 7,909
Net income (loss) before taxes                 (3,555) (1,307) 1,633
Income tax benefit                 (54) 146 45
Net loss                 (3,501) (1,453) 1,588
Depreciation/Amortization                 281 318 291
Restructuring Charges                     12
Interest expense, net                 (244) (37) 0
Total Assets 8,567       9,595       8,567 9,595 9,894
Goodwill 0       0       0 0 0
United states
                      
Segment Reporting Information [Line Items]                      
Net Sales                 20,119 22,727 22,626
Italy
                      
Segment Reporting Information [Line Items]                      
Net Sales                 1,530 2,524 3,152
Germany
                      
Segment Reporting Information [Line Items]                      
Net Sales                 1,218 907 750
United kingdom
                      
Segment Reporting Information [Line Items]                      
Net Sales                 748 1,703 778
France
                      
Segment Reporting Information [Line Items]                      
Net Sales                 681 679 758
All Other Countries
                      
Segment Reporting Information [Line Items]                      
Net Sales                 $ 3,248 $ 2,940 $ 3,907
Maximum | All Other Countries
                      
Segment Reporting Information [Line Items]                      
Percent of revenue from countries not separately disclosed                 5.00%    
Minimum | United states
                      
Segment Reporting Information [Line Items]                      
Long-lived asset percentage held in a specific location 99.00%               99.00%