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Note 15 - Income Taxes (Details Textual) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Jul. 31, 2017
Jul. 31, 2016
Jul. 31, 2017
Jul. 31, 2016
Oct. 31, 2018
Income Tax Expense (Benefit) $ 287,036 $ 1,567 $ 286,485 $ (4,597)  
Deferred Tax Assets, Valuation Allowance 922,000   922,000    
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest (50,173) 1,093 (57,549) (29,705)  
Gain (Loss) on Extinguishment of Debt (42,258) (34,854)  
Scenario, Forecast [Member]          
Increase in Interest Incurred Per Year, Amount         $ 23,400
State and Local Jurisdiction [Member]          
Income Tax Expense (Benefit) 8,523 $ 1,434 10,797 $ 4,995  
State and Local Jurisdiction [Member] | Between 2017 and 2036 [Member]          
Operating Loss Carryforwards 2,200,000   2,200,000    
State and Local Jurisdiction [Member] | Between 2017 and 2021 [Member]          
Operating Loss Carryforwards 301,700   301,700    
State and Local Jurisdiction [Member] | Between 2022 and 2026 [Member]          
Operating Loss Carryforwards 253,900   253,900    
State and Local Jurisdiction [Member] | Between 2027 and 2031 [Member]          
Operating Loss Carryforwards 1,327,300   1,327,300    
State and Local Jurisdiction [Member] | Between 2032 and 2036 [Member]          
Operating Loss Carryforwards $ 348,000   $ 348,000