XML 63 R50.htm IDEA: XBRL DOCUMENT v3.23.1
Note 5 - Revenue From Contracts With Customers (Details Textual)
12 Months Ended
Jan. 31, 2023
Minimum [Member]  
Contract with Customers, Turn Over Period (Month) 3 months
Maximum [Member]  
Contract with Customers, Turn Over Period (Month) 6 months