Goodwill Intangible assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	$ 986	$ 0	$ 1,839	$ 0
Finite-Lived Intangible Assets, Gross	47,468		47,468
Finite-Lived Intangible Assets, Accumulated Amortization	(2,629)		(2,629)
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year	3,803		3,803
Finite-Lived Intangible Assets, Net	45,448		45,448		$ 47,304
Finite-Lived Intangible Assets, Amortization Expense, Year Two	6,328		6,328
Finite-Lived Intangible Assets, Amortization Expense, Year Three	6,097		6,097
Finite-Lived Intangible Assets, Amortization Expense, Year Four	5,949		5,949
Finite-Lived Intangible Assets, Amortization Expense, Year Five	5,703		$ 5,703
Diagnostics test - Thyroid [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			9 years
Finite-Lived Intangible Assets, Gross	8,519		$ 8,519
Diagnostics test - Pancreas [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			7 years
Finite-Lived Intangible Assets, Gross	2,882		$ 2,882
BioBank [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			4 years
Finite-Lived Intangible Assets, Gross	1,575		$ 1,575
Diagnostic Test - Pancreas RedPath [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			7 years
Finite-Lived Intangible Assets, Gross	16,141		$ 16,141
Diagnostic Test - Barrett's RedPath [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			9 years
Finite-Lived Intangible Assets, Gross	18,351		$ 18,351
CLIA Diagnostic Lab [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			2 years 3 months
Finite-Lived Intangible Assets, Gross	$ 609		$ 609