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The Company, Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Earnings Per Share [Abstract]
Series C Convertible Preferred Stock, shares outstanding (in shares)	0		0		2,103
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]
Potential common stock equivalents (in shares)	5,756,838	6,339,848	5,791,899	6,511,321
Series C Convertible Preferred Shares [Member]
Earnings Per Share [Abstract]
Series C Convertible Preferred Stock, shares outstanding (in shares)	0		0
Loss attributable to each class	$ 0	$ (75)	$ (22)	$ (189)
Weighted average number of shares outstanding during the period (in shares)	0	6,250	740	7,093
Basic and diluted loss per share (in dollars per share)	$ 0	$ (11.94)	$ (29.93)	$ (26.66)
Common Stock [Member]
Earnings Per Share [Abstract]
Loss attributable to each class	$ (1,680)	$ (1,007)	$ (2,693)	$ (2,226)
Weighted average number of shares outstanding during the period (in shares)	33,731,739	31,359,104	33,448,030	31,033,114
Basic and diluted loss per share (in dollars per share)	$ (0.05)	$ (0.03)	$ (0.08)	$ (0.07)
Common Stock Purchase Warrants [Member]
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]
Potential common stock equivalents (in shares)	697,154	2,034,882	723,527	2,133,489
Restricted Stock Units [Member]
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]
Potential common stock equivalents (in shares)	151,646	120,773	160,334	125,150
Common Stock Options [Member]
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]
Potential common stock equivalents (in shares)	4,908,038	4,184,193	4,908,038	4,252,682