DISCONTINUED OPERATIONS (Allowance for Doubtful Accounts) (Details) - Genetic Assays and Platforms and Patient Testing - Included in assets held for sale - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Allowance for doubtful accounts, beginning balance	$ 7,927	$ 3,821
Provision	9,447	6,116
Write Offs	(2,710)	(2,010)
Allowance for doubtful accounts, ending balance	$ 14,664	$ 7,927