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DISCONTINUED OPERATIONS (Allowance for Doubtful Accounts) (Details) - Genetic Assays and Platforms and Patient Testing - Discontinued operations - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Disposal Group, Including Discontinued Operations, Allowance for Doubtful Accounts [Roll Forward]        
Beginning Balance $ 10,462 $ 8,406 $ 14,664 $ 7,927
Additions 0 1,052 0 3,782
Deductions (5,192) (168) (9,394) (2,419)
Ending Balance $ 5,270 $ 9,290 $ 5,270 $ 9,290