The Company, Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Earnings Per Share [Abstract]
Series C Convertible Preferred Stock, shares outstanding (in shares)	0		0
Basic loss per share (in dollars per share)	$ (0.07)	$ (0.03)
Diluted loss per share (in dollars per share)	$ (0.07)	$ (0.03)
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]
Potential common stock equivalents (in shares)	5,930,578	5,826,962
Series C Convertible Preferred Stock [Member]
Earnings Per Share [Abstract]
Series C Convertible Preferred Stock, shares outstanding (in shares)	0
Loss attributable to each class	$ 0	$ (17)
Weighted average number of shares outstanding during the period (in shares)	0	1,480
Basic loss per share (in dollars per share)	$ 0	$ (11.42)
Diluted loss per share (in dollars per share)	$ 0	$ (11.42)
Common Stock [Member]
Earnings Per Share [Abstract]
Loss attributable to each class	$ (2,418)	$ (1,018)
Weighted average number of shares outstanding during the period (in shares)	33,802,129	33,164,321
Basic loss per share (in dollars per share)	$ (0.07)	$ (0.03)
Diluted loss per share (in dollars per share)	$ (0.07)	$ (0.03)
Common Stock Purchase Warrants [Member]
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]
Potential common stock equivalents (in shares)	6,384	749,901
Restricted Stock Units [Member]
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]
Potential common stock equivalents (in shares)	87,109	169,023
Common Stock Options [Member]
Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]
Potential common stock equivalents (in shares)	5,837,085	4,908,038