Note 20 - Fair Value of Financial Instruments - Fair Value of Notes (Details) (Parentheticals)	3 Months Ended	12 Months Ended
	Jan. 31, 2020	Oct. 31, 2019	Dec. 10, 2019	Jan. 15, 2019	Jul. 27, 2017
The 10.0% 2022 Notes [Member] | Senior Secured Notes [Member]
Debt Instrument, Stated Interest Rate	10.00%	10.00%	10.00%		10.00%
Debt Instrument, Maturity Date	Jul. 15, 2022	Jul. 15, 2022
The 10.5% 2024 Notes [Member] | Senior Secured Notes [Member]
Debt Instrument, Stated Interest Rate	10.50%	10.50%	10.50%	10.50%
Debt Instrument, Maturity Date	Jul. 15, 2024	Jul. 15, 2024
The 7.75% Senior Secured 1.125 Lien Notes due February 15, 2026 [Member] | Senior Secured Notes [Member]
Debt Instrument, Stated Interest Rate	7.75%	7.75%
Debt Instrument, Maturity Date	Feb. 15, 2026	Feb. 15, 2026
The 10.5% Senior Secured 1.25 Lien Notes due February 15, 2026 [Member] | Senior Secured Notes [Member]
Debt Instrument, Stated Interest Rate	10.50%	10.50%
Debt Instrument, Maturity Date	Feb. 15, 2026	Feb. 15, 2026
The 11.25% Senior Secured 1.5 Lien Notes due February 15, 2026 [Member] | Senior Secured Notes [Member]
Debt Instrument, Stated Interest Rate	11.25%	11.25%
Debt Instrument, Maturity Date	Feb. 15, 2026	Feb. 15, 2026
The 10.0% Senior Secured 1.75 Lien Notes due 2025 [Member] | Senior Secured Notes [Member]
Debt Instrument, Stated Interest Rate	10.00%	10.00%	10.00%
Debt Instrument, Maturity Date	Nov. 15, 2025	Nov. 15, 2025
The 13.5% 2026 Notes [Member] | Senior Notes [Member]
Debt Instrument, Stated Interest Rate	13.50%	13.50%
Debt Instrument, Maturity Date	Feb. 01, 2026	Feb. 01, 2026
The 5.0% 2040 Notes [Member] | Senior Notes [Member]
Debt Instrument, Stated Interest Rate	5.00%	5.00%
Debt Instrument, Maturity Date	Feb. 01, 2040	Feb. 01, 2040
Senior Unsecured Term Loan Credit Facility Due 2027 [Member] | Unsecured Senior Term Loan [Member]
Debt Instrument, Maturity Date	Feb. 01, 2027	Feb. 01, 2027
The 10.0% Senior Secured 1.75 Lien Term Loans Due 2028 [Member] | Senior Secured Term Loan [Member]
Debt Instrument, Maturity Date	Jan. 31, 2028	Jan. 31, 2028