Note 20 - Fair Value of Financial Instruments - Fair Value of Notes (Details) - USD ($) $ in Thousands	Apr. 30, 2021	Oct. 31, 2020	Apr. 30, 2020	Jan. 31, 2020	Dec. 10, 2019
Notes, Fair Value	$ 1,409,595	$ 1,241,570
Fair Value, Inputs, Level 1 [Member]
Notes, Fair Value	0	0
Fair Value, Inputs, Level 2 [Member]
Notes, Fair Value	290,178	173,046
Fair Value, Inputs, Level 3 [Member]
Notes, Fair Value	1,119,417	1,068,524
The 10.0% 2022 Notes [Member] | Senior Secured Notes [Member]
Notes, Fair Value	$ 112,465	$ 107,878
Debt Instrument, Stated Interest Rate	10.00%	10.00%	10.00%	10.00%	10.00%
The 10.0% 2022 Notes [Member] | Senior Secured Notes [Member] | Fair Value, Inputs, Level 1 [Member]
Notes, Fair Value	$ 0	$ 0
The 10.0% 2022 Notes [Member] | Senior Secured Notes [Member] | Fair Value, Inputs, Level 2 [Member]
Notes, Fair Value	112,465	107,878
The 10.0% 2022 Notes [Member] | Senior Secured Notes [Member] | Fair Value, Inputs, Level 3 [Member]
Notes, Fair Value	$ 0	0
The 10.5% 2024 Notes [Member]
Debt Instrument, Stated Interest Rate	10.50%
The 10.5% 2024 Notes [Member] | Senior Secured Notes [Member]
Notes, Fair Value	$ 72,296	$ 67,941
Debt Instrument, Stated Interest Rate	10.50%	10.50%		10.50%	10.50%
The 10.5% 2024 Notes [Member] | Senior Secured Notes [Member] | Fair Value, Inputs, Level 1 [Member]
Notes, Fair Value	$ 0	$ 0
The 10.5% 2024 Notes [Member] | Senior Secured Notes [Member] | Fair Value, Inputs, Level 2 [Member]
Notes, Fair Value	72,296	0
The 10.5% 2024 Notes [Member] | Senior Secured Notes [Member] | Fair Value, Inputs, Level 3 [Member]
Notes, Fair Value	0	67,941
The 10.0% Senior Secured 1.75 Lien Notes due 2025 [Member] | Senior Secured Notes [Member]
Notes, Fair Value	$ 164,446	$ 132,246
Debt Instrument, Stated Interest Rate	10.00%	10.00%		10.00%	10.00%
The 10.0% Senior Secured 1.75 Lien Notes due 2025 [Member] | Senior Secured Notes [Member] | Fair Value, Inputs, Level 1 [Member]
Notes, Fair Value	$ 0	$ 0
The 10.0% Senior Secured 1.75 Lien Notes due 2025 [Member] | Senior Secured Notes [Member] | Fair Value, Inputs, Level 2 [Member]
Notes, Fair Value	0	0
The 10.0% Senior Secured 1.75 Lien Notes due 2025 [Member] | Senior Secured Notes [Member] | Fair Value, Inputs, Level 3 [Member]
Notes, Fair Value	164,446	132,246
The 7.75% Senior Secured 1.125 Lien Notes due February 15, 2026 [Member] | Senior Secured Notes [Member]
Notes, Fair Value	$ 378,000	$ 353,500
Debt Instrument, Stated Interest Rate	7.75%	7.75%
The 7.75% Senior Secured 1.125 Lien Notes due February 15, 2026 [Member] | Senior Secured Notes [Member] | Fair Value, Inputs, Level 1 [Member]
Notes, Fair Value	$ 0	$ 0
The 7.75% Senior Secured 1.125 Lien Notes due February 15, 2026 [Member] | Senior Secured Notes [Member] | Fair Value, Inputs, Level 2 [Member]
Notes, Fair Value	0	0
The 7.75% Senior Secured 1.125 Lien Notes due February 15, 2026 [Member] | Senior Secured Notes [Member] | Fair Value, Inputs, Level 3 [Member]
Notes, Fair Value	378,000	353,500
The 10.5% Senior Secured 1.25 Lien Notes due February 15, 2026 [Member] | Senior Secured Notes [Member]
Notes, Fair Value	$ 307,731	$ 274,558
Debt Instrument, Stated Interest Rate	10.50%	10.50%
The 10.5% Senior Secured 1.25 Lien Notes due February 15, 2026 [Member] | Senior Secured Notes [Member] | Fair Value, Inputs, Level 1 [Member]
Notes, Fair Value	$ 0	$ 0
The 10.5% Senior Secured 1.25 Lien Notes due February 15, 2026 [Member] | Senior Secured Notes [Member] | Fair Value, Inputs, Level 2 [Member]
Notes, Fair Value	0	0
The 10.5% Senior Secured 1.25 Lien Notes due February 15, 2026 [Member] | Senior Secured Notes [Member] | Fair Value, Inputs, Level 3 [Member]
Notes, Fair Value	$ 307,731	274,558
The 11.25% Senior Secured 1.5 Lien Notes due February 15, 2026 [Member]
Debt Instrument, Stated Interest Rate	11.25%		11.25%
The 11.25% Senior Secured 1.5 Lien Notes due February 15, 2026 [Member] | Senior Secured Notes [Member]
Notes, Fair Value	$ 162,318	$ 162,723
Debt Instrument, Stated Interest Rate	11.25%	11.25%
The 11.25% Senior Secured 1.5 Lien Notes due February 15, 2026 [Member] | Senior Secured Notes [Member] | Fair Value, Inputs, Level 1 [Member]
Notes, Fair Value	$ 0	$ 0
The 11.25% Senior Secured 1.5 Lien Notes due February 15, 2026 [Member] | Senior Secured Notes [Member] | Fair Value, Inputs, Level 2 [Member]
Notes, Fair Value	0	0
The 11.25% Senior Secured 1.5 Lien Notes due February 15, 2026 [Member] | Senior Secured Notes [Member] | Fair Value, Inputs, Level 3 [Member]
Notes, Fair Value	162,318	162,723
The 13.5% 2026 Notes [Member] | Senior Notes [Member]
Notes, Fair Value	$ 68,468	$ 54,354
Debt Instrument, Stated Interest Rate	13.50%	13.50%
The 13.5% 2026 Notes [Member] | Senior Notes [Member] | Fair Value, Inputs, Level 1 [Member]
Notes, Fair Value	$ 0	$ 0
The 13.5% 2026 Notes [Member] | Senior Notes [Member] | Fair Value, Inputs, Level 2 [Member]
Notes, Fair Value	68,468	54,354
The 13.5% 2026 Notes [Member] | Senior Notes [Member] | Fair Value, Inputs, Level 3 [Member]
Notes, Fair Value	0	0
The 5.0% 2040 Notes [Member] | Senior Notes [Member]
Notes, Fair Value	$ 36,949	$ 10,814
Debt Instrument, Stated Interest Rate	5.00%	5.00%
The 5.0% 2040 Notes [Member] | Senior Notes [Member] | Fair Value, Inputs, Level 1 [Member]
Notes, Fair Value	$ 0	$ 0
The 5.0% 2040 Notes [Member] | Senior Notes [Member] | Fair Value, Inputs, Level 2 [Member]
Notes, Fair Value	36,949	10,814
The 5.0% 2040 Notes [Member] | Senior Notes [Member] | Fair Value, Inputs, Level 3 [Member]
Notes, Fair Value	0	0
Senior Unsecured Term Loan Credit Facility Due 2027 [Member] | Unsecured Senior Term Loan [Member]
Notes, Fair Value	18,431	13,091
Senior Unsecured Term Loan Credit Facility Due 2027 [Member] | Unsecured Senior Term Loan [Member] | Fair Value, Inputs, Level 1 [Member]
Notes, Fair Value	0	0
Senior Unsecured Term Loan Credit Facility Due 2027 [Member] | Unsecured Senior Term Loan [Member] | Fair Value, Inputs, Level 2 [Member]
Notes, Fair Value	0	0
Senior Unsecured Term Loan Credit Facility Due 2027 [Member] | Unsecured Senior Term Loan [Member] | Fair Value, Inputs, Level 3 [Member]
Notes, Fair Value	18,431	13,091
The 10.0% Senior Secured 1.75 Lien Term Loans Due 2028 [Member] | Senior Secured Term Loan [Member]
Notes, Fair Value	88,491	64,465
The 10.0% Senior Secured 1.75 Lien Term Loans Due 2028 [Member] | Senior Secured Term Loan [Member] | Fair Value, Inputs, Level 1 [Member]
Notes, Fair Value	0	0
The 10.0% Senior Secured 1.75 Lien Term Loans Due 2028 [Member] | Senior Secured Term Loan [Member] | Fair Value, Inputs, Level 2 [Member]
Notes, Fair Value	0	0
The 10.0% Senior Secured 1.75 Lien Term Loans Due 2028 [Member] | Senior Secured Term Loan [Member] | Fair Value, Inputs, Level 3 [Member]
Notes, Fair Value	$ 88,491	$ 64,465