Property, plant and equipment, net (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017		Mar. 31, 2016	Dec. 31, 2016
Property, plant and equipment net [Abstract]
Accumulated depreciation and amortization	$ (2,835)	[1]		$ (2,980)
Property, plant and equipment, net	4,992	[1]		5,529
Depreciation and amortization expense	216		$ 429
Equipment, Furniture and Fixtures [Member]
Property, plant and equipment net [Abstract]
Property, plant and equipment	3,802	[1]		4,718
Leasehold Improvements [Member]
Property, plant and equipment net [Abstract]
Property, plant and equipment	4,025	[1]		$ 3,791
Depreciation and amortization expense	$ 216		$ 429

[1] Reflects the effect of the OncoCyte Deconsolidation.