Sale of Cybersecurity Assets - Schedule of Loss on Sale of Cybersecurity Assets (Details) - USD ($) $ in Thousands			3 Months Ended		9 Months Ended
	Mar. 19, 2018	Mar. 16, 2018	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 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)