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INTANGIBLES AND OTHER ASSETS (Details) (USD $)
 3 Months Ended 3 Months Ended 0 Months Ended 12 Months Ended 3 Months Ended 3 Months Ended 3 Months Ended 3 Months Ended 3 Months Ended 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Dec. 31, 2013
Mar. 31, 2014
Service life
Jan. 02, 2014
Acquired technology
Dec. 31, 2013
Acquired technology
Mar. 31, 2014
Acquired technology
Mar. 31, 2014
Acquired technology
Minimum
Mar. 31, 2014
Acquired technology
Maximum
Mar. 31, 2014
Assay royalties
Dec. 31, 2013
Assay royalties
Mar. 31, 2014
Third party payor relationships
Dec. 31, 2013
Third party payor relationships
Mar. 31, 2014
Tradenames and trademarks
Dec. 31, 2013
Tradenames and trademarks
Mar. 31, 2014
Customer relationships
Dec. 31, 2013
Customer relationships
Mar. 31, 2014
Covenants not to compete
Dec. 31, 2013
Covenants not to compete
Mar. 31, 2014
Patents
Dec. 31, 2013
Patents
Mar. 31, 2014
Intellectual property
Dec. 31, 2013
Intellectual property
Acquired Finite-Lived Intangible Assets [Line Items]                                              
Finite-lived intangible assets, cost $ 13,842,000   $ 13,793,000     $ 9,009,000 $ 9,009,000     $ 1,434,000 $ 1,434,000 $ 367,000 $ 367,000 $ 824,000 $ 824,000 $ 652,000 $ 652,000 $ 184,000 $ 184,000 $ 1,202,000 $ 1,153,000 $ 170,000 $ 170,000
Finite-lived intangible assets, accumulated amortization 4,943,000   4,598,000     3,175,000 3,380,000     666,000 614,000 79,000 73,000 263,000 233,000 65,000 54,000 92,000 77,000 356,000 336,000 42,000 36,000
Finite-lived intangible assets, net book value 8,899,000   9,195,000     5,834,000 5,629,000     768,000 820,000 288,000 294,000 561,000 591,000 587,000 598,000 92,000 107,000 846,000 817,000 128,000 134,000
Finite-lived intangible asset, useful life         10 years 7 years   7 years 10 years 7 years   15 years   7 years   15 years   3 years       7 years  
Amortization of intangible assets 300,000 500,000                                          
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]                                              
Amortization expense, 2014 1,400,000                                            
Amortization expense, 2015 1,300,000                                            
Amortization expense, 2016 1,300,000                                            
Amortization expense, 2017 1,300,000                                            
Amortization expense, 2018 1,000,000                                            
Income (loss) from continuing operations       100,000                                      
Net income (loss)       $ 100,000                                      
Earnings per share, basic and diluted $ (0.60) [1] $ (0.54) [1]   $ 0.01                                      
[1] Net loss per share and the number of shares used in the per share calculations for all periods presented reflect the one-for-twelve reverse stock split that took effect on January 27, 2014.