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The Company, Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018
Earnings Per Share [Abstract]
Loss attributable to each class	$ (1,082)	$ (1,333)	$ (1,629)	$ (2,081)	$ (2,415)	$ (3,710)
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]
Potential common stock equivalents (in shares)	6,339,848		5,451,545		6,511,321	4,381,607
Series C Preferred Stock [Member]
Earnings Per Share [Abstract]
Loss attributable to each class	$ (75)		$ (671)		$ (189)	$ (2,072)
Weighted average number of shares outstanding during the period (in shares)	6,250		25,847		7,093	30,897
Basic and Diluted loss per share (in dollars per share)	$ (11.94)		$ (25.96)		$ (26.66)	$ (67.07)
Common Stock [Member]
Earnings Per Share [Abstract]
Loss attributable to each class	$ (1,007)		$ (958)		$ (2,226)	$ (1,638)
Weighted average number of shares outstanding during the period (in shares)	31,359,104		13,734,384		31,033,114	9,078,741
Basic and Diluted loss per share (in dollars per share)	$ (0.03)		$ (0.07)		$ (0.07)	$ (0.18)
Common Stock Purchase Warrants [Member]
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]
Potential common stock equivalents (in shares)	2,034,882		2,396,721		2,133,489	2,401,646
Restricted Stock Units [Member]
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]
Potential common stock equivalents (in shares)	120,773		17,028		125,150	17,028
Common Stock Options [Member]
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]
Potential common stock equivalents (in shares)	4,184,193		3,037,796		4,252,682	1,962,933