Net Income (Loss) per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 30, 2019	Apr. 30, 2018
Earnings Per Share [Abstract]
Net income (loss)	$ (3,067)	$ (3,572)
Weighted average shares outstanding (shares)	15,486	15,317
Net effect of dilutive share-based on the treasury stock method using average market price (shares)	0	0
Totals (shares)	15,486	15,317
Net income (loss) per share - basic (usd per share)	$ (0.20)	$ (0.23)
Net income (loss) per share - diluted (usd per share)	$ (0.20)	$ (0.23)
Number of anti-dilutive stock options outstanding	180	201