Net Income (Loss) per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Apr. 30, 2020	Apr. 30, 2019
Earnings Per Share [Abstract]
Net income (loss)	$ (4,698)	$ (3,067)
Weighted average shares outstanding (shares)	15,654,000	15,486,000
Net effect of dilutive share-based on the treasury stock method using average market price (shares)	0	0
Totals (shares)	15,654,000	15,486,000
Net income (loss) per share - basic (usd per share)	$ (0.30)	$ (0.20)
Net income (loss) per share - diluted (usd per share)	$ (0.30)	$ (0.20)
Antidilutive stock options (shares)	75,000	180,000