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Note 19 - Contract Balances, Performance Obligations and Contract Costs 1 (Details Textual) - USD ($)
$ in Millions
12 Months Ended
Jan. 31, 2021
Jan. 31, 2020
Jan. 31, 2019
Capitalized Contract Cost, Net, Total $ 12.9 $ 9.8  
Capitalized Contract Cost, Amortization $ 3.3 $ 2.5 $ 1.8