Note 11 - Senior Secured, Senior and Senior Subordinated Notes (Details) (Parentheticals)	3 Months Ended	6 Months Ended	12 Months Ended
	Apr. 30, 2016	Apr. 30, 2016	Oct. 31, 2015	Jan. 15, 2016	Oct. 02, 2012
Senior Secured Notes [Member] | The 7.25% 2020 Notes [Member]
Debt Instrument, Interest Rate, Stated Percentage	7.25%	7.25%	7.25%
Debt Instrument, Maturity Date		Oct. 15, 2020	Oct. 15, 2020
Senior Secured Notes [Member] | The 9.125% 2020 Notes [Member]
Debt Instrument, Interest Rate, Stated Percentage	9.125%	9.125%	9.125%
Debt Instrument, Maturity Date		Nov. 15, 2020	Nov. 15, 2020
Senior Secured Notes [Member] | The 2.0% 2021 Notes [Member]
Debt Instrument, Interest Rate, Stated Percentage	2.00%	2.00%	2.00%
Debt Instrument, Maturity Date		Nov. 01, 2021	Nov. 01, 2020
Senior Secured Notes [Member] | The 5.0% 2021 Notes [Member]
Debt Instrument, Interest Rate, Stated Percentage	5.00%	5.00%	5.00%
Debt Instrument, Maturity Date		Nov. 01, 2021	Nov. 01, 2021
Unsecured Senior Notes Excluding Senior Amortizing Notes and Senior Exchangeable Notes [Member] | The 6.25% 2016 Notes [Member]
Debt Instrument, Interest Rate, Stated Percentage	6.25%	6.25%	6.25%	6.25%
Debt Instrument, Maturity Date	Jan. 15, 2016	Jan. 15, 2016	Jan. 15, 2016
Unsecured Senior Notes Excluding Senior Amortizing Notes and Senior Exchangeable Notes [Member] | The 7.5% 2016 Notes [Member]
Debt Instrument, Interest Rate, Stated Percentage	7.50%	7.50%	7.50%
Debt Instrument, Maturity Date	May 15, 2016	May 15, 2016	May 15, 2016
Unsecured Senior Notes Excluding Senior Amortizing Notes and Senior Exchangeable Notes [Member] | The 8.625% 2017 Notes [Member]
Debt Instrument, Interest Rate, Stated Percentage	8.625%	8.625%	8.625%
Debt Instrument, Maturity Date	Jan. 15, 2017	Jan. 15, 2017	Jan. 15, 2017
Unsecured Senior Notes Excluding Senior Amortizing Notes and Senior Exchangeable Notes [Member] | The 7.0% 2019 Notes Member]
Debt Instrument, Interest Rate, Stated Percentage	7.00%	7.00%	7.00%
Debt Instrument, Maturity Date		Jan. 15, 2019	Jan. 15, 2019
Unsecured Senior Notes Excluding Senior Amortizing Notes and Senior Exchangeable Notes [Member] | The 8.0% Senior Notes Due 2019 [Member]
Debt Instrument, Interest Rate, Stated Percentage	8.00%	8.00%	8.00%
Debt Instrument, Maturity Date		Nov. 01, 2019	Nov. 01, 2019
Senior Amortizing Notes [Member] | The 11.0% 2017 Amortizing Note [Member]
Debt Instrument, Interest Rate, Stated Percentage	11.00%	11.00%	11.00%		11.00%
Senior Amortizing Notes [Member] | Senior Exchangeable Notes Due 2017 [Member]
Debt Instrument, Maturity Date		Dec. 01, 2017	Dec. 01, 2017
Senior Amortizing Notes [Member]
Debt Instrument, Interest Rate, Stated Percentage	11.00%	11.00%