Net income (loss) per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2021	Oct. 31, 2020
Earnings Per Share [Abstract]
Net income	$ 1,325	$ 4,480	$ 1,176	$ 3,335
Weighted average shares outstanding - basic (shares)	16,033	15,733	15,927	15,566
Net effect of dilutive share-based on the treasury stock method using average market price (shares)	49	34	36	20
Totals (shares)	16,082	15,767	15,963	15,586
Net income (loss) per share - basic (usd per share)	$ 0.08	$ 0.28	$ 0.07	$ 0.21
Net income (loss) per share - diluted (usd per share)	$ 0.08	$ 0.28	$ 0.07	$ 0.21