The Company, Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net loss	$ (2,223)	$ (2,235)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potential common stock equivalents (in shares)	16,666,443	12,979,318
Common Stock [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net loss	$ (547)
Weighted average number of shares outstanding during the period (in shares)	4,371,369	2,176,731
Basic and Diluted net loss per share (in dollars per share)	$ (0.13)	$ (1.03)
Series C Preferred Stock [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net loss	$ (1,676)
Weighted average number of shares outstanding during the period (in shares)	36,002	0
Basic and Diluted net loss per share (in dollars per share)	$ (46.54)	$ 0
Shares used in computing net loss per basic and diluted preferred share (in shares)	36,002
Net loss per basic and diluted preferred share (in dollars per share)	$ (46.54)
Common Stock Equivalents of Convertible Debentures [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potential common stock equivalents (in shares)	0	9,206,526
Common Stock Purchase Warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potential common stock equivalents (in shares)	2,406,625	2,406,625
Common Stock Equivalents of Convertible Preferred Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potential common stock equivalents (in shares)	13,383,691	467,836
Common Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potential common stock equivalents (in shares)	876,127	898,331