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Note 1 - Summary of Business and Significant Accounting Policies - Goodwill (Details) - USD ($)
$ in Thousands
12 Months Ended
Jan. 31, 2020
Jan. 31, 2019
Beginning balance, gross $ 28,031 $ 26,631
Accumulated impairment (15,608) (15,608)
Beginning balance, net 12,423 11,023
Additions   1,510
Additions   1,510
Impact of foreign currency translation, gross (35) (110)
Impact of foreign currency translation (35) (110)
Ending balance, gross 27,996 28,031
Ending balance, net $ 12,388 $ 12,423