SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property & Equipment and Patent Costs (Details)	3 Months Ended
	Mar. 31, 2016 USD ($) item	Mar. 31, 2015 USD ($)	Dec. 31, 2015 USD ($)
Property and equipment
Assets under construction	$ 4,735,000		$ 8,038,000
Leasehold improvements	$ 10,757,000		7,118,000
Software Capitalization Policy
Software development stages | item	3
Patent Costs and Intangible Assets
Accrued liabilities	$ 20,477,000		22,253,000
Amortization of intangible assets	$ 50,000
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	2,000,000		$ 2,000,000
Amortization of intangible assets	$ 50,000	$ 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	$ 1,800,000
Expected cost to complete construction of project	$ 1,200,000
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	1,400,000
Expected cost to complete construction of project	$ 200,000