Sale of Cybersecurity Assets - Schedule of Loss on Sale of Cybersecurity Assets (Details) - USD ($) $ in Thousands			12 Months Ended
Mar. 19, 2018	Mar. 16, 2018	Dec. 31, 2018	Dec. 31, 2017
Sale Of Cybersecurity Assets
Cash proceeds	$ 60	$ 60	$ 60
Less: Assets sold			(27)
Less: Separation payments to former management			(40)
Less: Common stock issued to former management, at fair value			(120)
Loss on sale of cybersecurity assets			$ (127)

Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration