The Company, Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Earnings Per Share [Abstract]
Net loss	$ (290)	$ (13,671)	$ (3,868)	$ (17,111)
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]
Potential common stock equivalents (in shares)	10,681,654	11,036,649	14,117,860	11,815,217
Common Stock [Member]
Earnings Per Share [Abstract]
Net loss	$ (257)	$ (8,235)	$ (2,493)	$ (13,835)
Weighted average number of shares outstanding during the period (in shares)	29,912,827	2,477,743	16,099,752	2,328,274
Basic and Diluted net loss per share (in dollars per share)	$ (0.01)	$ (3.32)	$ (0.15)	$ (5.94)
Series C Preferred Stock [Member]
Earnings Per Share [Abstract]
Net loss	$ (33)	$ (5,436)	$ (1,375)	$ (3,276)
Weighted average number of shares outstanding during the period (in shares)	10,049	4,400	23,872	1,483
Basic and Diluted net loss per share (in dollars per share)	$ (3.23)	$ (1,235.43)	$ (57.58)	$ (2,208.96)
Common Stock Equivalents of Convertible Debentures [Member]
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]
Potential common stock equivalents (in shares)	0	7,546,299	0	8,191,777
Common Stock Purchase Warrants [Member]
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]
Potential common stock equivalents (in shares)	2,392,760	2,406,625	2,398,651	2,406,625
Common Stock Equivalents of Convertible Preferred Stock [Member] \| Series C Preferred Stock [Member]
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]
Potential common stock equivalents (in shares)	3,777,033	0	8,874,092	0
Common Stock Equivalents of Convertible Preferred Stock [Member] \| Series B Preferred Stock [Member]
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]
Potential common stock equivalents (in shares)	0	228,336	0	343,261
Restricted Stock Units [Member]
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]
Potential common stock equivalents (in shares)	140,097	0	58,717	0
Common Stock Options [Member]
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]
Potential common stock equivalents (in shares)	4,371,764	855,389	2,786,400	873,554

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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