Segment Reporting - Schedule of Segment Reporting Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Revenue	$ 312
Cost of revenue	(201)
Gross margin	111
Operating income (loss)	(2,945)	(654)
Cash and cash equivalents	334	189	$ 345	$ 359
Property and equipment	503		602
Intangible assets	426		468
Intellectual Property [Member]
Segment Reporting Information [Line Items]
Revenue
Cost of revenue
Gross margin
Operating income (loss)		(50)
Cash and cash equivalents
Property and equipment
Intangible assets
Cybersecurity [Member]
Segment Reporting Information [Line Items]
Revenue
Cost of revenue
Gross margin
Operating income (loss)	(221)
Cash and cash equivalents
Property and equipment
Intangible assets
Unallocated Corporate Other [Member]
Segment Reporting Information [Line Items]
Revenue
Cost of revenue
Gross margin
Operating income (loss)	(2,835)	(604)
Cash and cash equivalents	334		345
Property and equipment	6		8
Intangible assets	426		468
Bitcoin Mining [Member]
Segment Reporting Information [Line Items]
Revenue	312
Cost of revenue	(201)
Gross margin	111
Operating income (loss)	111
Cash and cash equivalents
Property and equipment	497		594
Intangible assets