Basic and Diluted Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Numerator:
Net loss	$ (2,953)	$ (1,657)
Deemed dividend on Series A redeemable preferred stock	(484)	0
Net loss attributable to common shareholders	$ (3,437)	$ (1,657)
Denominator:
Weighted average shares outstanding - basic (in shares)	2,055	2,028
Net loss per share, continuing operations (in usd per share)	$ (1.44)	$ (0.82)
Preferred dividends per share (in usd per share)	(0.23)	0
Net loss per common share—basic and diluted (in usd per share)	$ (1.67)	$ (0.82)
Stock options
Denominator:
Dilutive potential common shares:	0	0
Restricted stock units
Denominator:
Dilutive potential common shares:	0	0