SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property & Equipment and Patent Costs (Details)	6 Months Ended
	Jun. 30, 2016 USD ($) item	Jun. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)
Property and equipment
Assets under construction	$ 6,360,000		$ 8,038,000
Leasehold improvements	$ 10,923,000		7,118,000
Software Capitalization Policy
Software development stages | item	3
Patent Costs and Intangible Assets
Accrued liabilities	$ 23,808,000		22,253,000
Amortization of intangible assets	$ 100,000
MDx Health | Licensed Intellectual Property
Patent Costs and Intangible Assets
Estimated useful life	10 years
Intangible asset, net	$ 1,700,000		1,800,000
Accrued liabilities	1,000,000		$ 1,800,000
Amortization of intangible assets	$ 100,000	$ 0
Laboratory equipment | Minimum
Property and equipment
Estimated Useful Life	3 years
Laboratory equipment | Maximum
Property and equipment
Estimated Useful Life	5 years
Computer Equipment and Computer Software
Property and equipment
Estimated Useful Life	3 years
Leasehold Improvements
Property and equipment
Assets under construction	$ 2,700,000
Expected cost to complete construction of project	$ 300,000
Furniture and fixtures
Property and equipment
Estimated Useful Life	3 years
Buildings
Property and equipment
Estimated Useful Life	30 years
Software Development
Property and equipment
Assets under construction	$ 1,500,000
Machinery and Equipment
Property and equipment
Assets under construction	2,200,000
Expected cost to complete construction of project	$ 200,000