Business Segments and Sales by Product Group (Tables)
|3 Months Ended|
Apr. 30, 2022
|Business Segments and Sales by Product Group|
|Schedule of Revenue by Reporting Segments [Table Text Block]||
|Performance measures by segment [Table Text Block]||
Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef