Note 7 - Stock-based Compensation - Restricted Stock Activity (Details) - Restricted Stock [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	9 Months Ended
	Oct. 31, 2022	Jan. 31, 2022
Outstanding (in shares)	354
Outstanding, weighted average grant price (in dollars per share)	$ 7.48
Outstanding, aggregate intrinsic value	$ 2,287	$ 2,652
Granted (in shares)	102
Granted, weighted average grant price (in dollars per share)	$ 10.96
Vested and issued (in shares)	(147)
Vested and issued, weighted average grant price per share (in dollars per share)	$ 7.30
Forfeited or retired for taxes (in shares)	(42)
Forfeited or retired for taxes (in dollars per share)	$ 6.87
Outstanding (in shares)	267
Outstanding, weighted average grant price (in dollars per share)	$ 8.55