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Note 11 - Income Taxes - Provision for Income Taxes (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Oct. 31, 2020
Jul. 31, 2020
Apr. 30, 2020
Jan. 31, 2020
Oct. 31, 2019
Jul. 31, 2019
Apr. 30, 2019
Jan. 31, 2019
Oct. 31, 2020
Oct. 31, 2019
Oct. 31, 2018
Federal (1) [1]                 $ 0 $ 0 $ 0
State (2) [2]                 4,475 2,449 3,626
Total current income tax expense:                 4,475 2,449 3,626
Federal                 0 0 0
State                 0 0 0
Total deferred income tax expense:                 0 0 0
Total $ 1,810 $ 853 $ 100 $ 1,712 $ 1,221 $ 537 $ 345 $ 346 $ 4,475 $ 2,449 $ 3,626
[1] The current federal income tax expense is net of the use of federal net operating losses totaling $183.0 million (tax effected $38.4 million) and $4.0 million (tax effected $0.8 million) for the years ended October 31, 2020 and 2019, respectively. The current federal income tax expense did not include the use of federal net operating losses for the year ended October 31, 2018.
[2] The current state income tax expense is net of the use of state net operating losses totaling $72.5 million, $1.3 million and $4.4 million for the years ended October 31, 2020, 2019 and 2018, respectively.