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Note 10 - Stock-based Compensation - Restricted Stock Activity (Details) - Restricted Stock [Member] - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
Jan. 31, 2020
Jan. 31, 2019
Jan. 31, 2018
Outstanding (in shares) 283 360  
Outstanding, weighted average grant price (in dollars per share) $ 8.74 $ 9.05  
Outstanding, aggregate intrinsic value $ 3,234 $ 2,476 $ 3,254
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) 152 148  
Granted, weighted average grant price (in dollars per share) $ 9.09 $ 9.76  
Issued (in shares) (51) (94)  
Forfeited (in shares) (26) (131)  
Forfeited, weighted average grant price (in dollars per share) $ 8.79 $ 7.92  
Outstanding (in shares) 358 283  
Outstanding, weighted average grant price (in dollars per share) $ 9.03 $ 8.74