Note 11 - Senior Secured, Senior, Senior Amortizing, and Senior Exchangeable Notes (Details) - Senior Secured, Senior and Senior Subordinated Notes - USD ($) $ in Thousands	Jul. 31, 2015	Oct. 31, 2014
Senior Secured Notes [Member]
Senior Secured Notes:
Senior Notes	$ 980,988	$ 979,935
Unsecured Senior Notes Excluding Senior Amortizing Notes And Senior Exchangeable Notes [Member]
Senior Secured Notes:
Senior Notes	841,056	590,472
The 7.25% 2020 Notes [Member] | Senior Secured Notes [Member]
Senior Secured Notes:
Senior Notes	577,000	577,000
The 9.125% 2020 Notes [Member] | Senior Secured Notes [Member]
Senior Secured Notes:
Senior Notes	220,000	220,000
The 2.0% 2021 Notes [Member] | Senior Secured Notes [Member]
Senior Secured Notes:
Senior Notes	53,136	53,129
The 5.0% 2021 Notes [Member] | Senior Secured Notes [Member]
Senior Secured Notes:
Senior Notes	130,852	129,806
The 11.875% 2015 Notes [Member] | Unsecured Senior Notes Excluding Senior Amortizing Notes And Senior Exchangeable Notes [Member]
Senior Secured Notes:
Senior Notes	60,737	60,414
The 6.25% 2016 Notes [Member] | Unsecured Senior Notes Excluding Senior Amortizing Notes And Senior Exchangeable Notes [Member]
Senior Secured Notes:
Senior Notes	172,744	172,483
The 7.5% 2016 Notes [Member] | Unsecured Senior Notes Excluding Senior Amortizing Notes And Senior Exchangeable Notes [Member]
Senior Secured Notes:
Senior Notes	86,532	86,532
The 8.625% 2017 Notes [Member] | Unsecured Senior Notes Excluding Senior Amortizing Notes And Senior Exchangeable Notes [Member]
Senior Secured Notes:
Senior Notes	121,043	121,043
The 7.0% 2019 Notes [Member] | Unsecured Senior Notes Excluding Senior Amortizing Notes And Senior Exchangeable Notes [Member]
Senior Secured Notes:
Senior Notes	150,000	150,000
8.0% Senior Notes Due 2019 [Member] | Unsecured Senior Notes Excluding Senior Amortizing Notes And Senior Exchangeable Notes [Member]
Senior Secured Notes:
Senior Notes	250,000
The 11.0% 2017 Amortizing Note [Member] | Senior Amortizing Notes [Member]
Senior Secured Notes:
Senior Notes	12,811	17,049
Senior Exchangeable Notes Due 2017 [Member] | Senior Exchangeable Notes [Member]
Senior Secured Notes:
Senior Notes	$ 72,838	$ 70,101