XML 67 R40.htm IDEA: XBRL DOCUMENT v3.20.1
Other Assets - Amortization (Details)
$ in Millions
Jan. 31, 2020
USD ($)
Amortization expense for remainder of fiscal 2020 $ 0.1
Amortization expense for 2021 0.1
Amortization expense for 2022 0.1
Amortization expense for 2023 0.1
Maximum [Member]  
Amortization expense thereafter through fiscal year 2023 $ 0.1