Note 9 - Stock-based Compensation - Restricted Stock Activity (Details) - Restricted Stock [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2020
Outstanding (in shares)	372	321
Outstanding, weighted average grant price (in dollars per share)	$ 7.62	$ 9.03
Outstanding, aggregate intrinsic value	$ 2,652	$ 2,843	$ 2,902
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)	138	156
Granted, weighted average grant price (in dollars per share)	$ 7.14	$ 5.88
Issued (in shares)	(113)	(64)
Forfeited (in shares)	(43)	(41)
Forfeited, weighted average grant price (in dollars per share)	$ 7.47	$ 8.31
Outstanding (in shares)	354	372
Outstanding, weighted average grant price (in dollars per share)	$ 7.48	$ 7.62