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Note 11 - Senior Notes and Credit Facilities - Senior Notes and Credit Facilities Balances (Details) - USD ($)
Jan. 31, 2019
Oct. 31, 2018
Senior Secured Notes [Member]    
Long-term Debt, Total [1],[2] $ 1,115,602,000 $ 1,093,423,000
Senior Secured Notes [Member] | The 9.50% 2020 Notes [Member]    
Long-term Debt, Total [1],[2] 74,614,000 74,561,000
Senior Secured Notes [Member] | The 2.0% 2021 Notes [Member]    
Long-term Debt, Total [1],[2] 53,103,000 53,094,000
Senior Secured Notes [Member] | The 5.0% 2021 Notes [Member]    
Long-term Debt, Total [1],[2] 136,052,000 135,571,000
Senior Secured Notes [Member] | The 10.0% 2022 Notes [Member]    
Long-term Debt, Total [1],[2] 435,763,000 435,461,000
Senior Secured Notes [Member] | The 10.5% 2024 Notes [Member]    
Long-term Debt, Total [1],[2] 416,070,000 394,736,000
Unsecured Senior Notes Excluding Senior Amortizing Notes and Senior Exchangeable Notes [Member]    
Long-term Debt, Total [1],[2] 144,342,000 144,426,000
Unsecured Senior Notes Excluding Senior Amortizing Notes and Senior Exchangeable Notes [Member] | The 8.0% Senior Notes Due 2019 [Member]    
Long-term Debt, Total [1],[2],[3]
Unsecured Senior Notes Excluding Senior Amortizing Notes and Senior Exchangeable Notes [Member] | Thirteen and a Half Percent Senior Notes Due 2026 [Member]    
Long-term Debt, Total [1],[2] 100,932,000 101,162,000
Unsecured Senior Notes Excluding Senior Amortizing Notes and Senior Exchangeable Notes [Member] | Five Percent Senior Notes due 2040 [Member]    
Long-term Debt, Total [1],[2] 43,410,000 43,264,000
Senior Unsecured Term Loan Credit Facility Due 2027 [Member]    
Revolving Credit Facility 201,424 $ 201,389
Senior Secured Revolving Credit Facility [Member]    
Revolving Credit Facility [1],[2],[4] $ 36,000  
[1] Notes payable on our Condensed Consolidated Balance Sheets as of January 31, 2019 and October 31, 2018 consists of the total senior secured, senior, senior amortizing and senior exchangeable notes shown above, as well as accrued interest of $18.1 million and $35.6 million, respectively.
[2] Unamortized debt issuance costs at January 31, 2019 and October 31, 2018 were $13.7 million and $14.1 million, respectively.
[3] $26.0 million of 8.0% Senior Notes due 2019 are owned by a wholly-owned consolidated subsidiary of HEI. Therefore, in accordance with GAAP, such notes are not reflected on the Condensed Consolidated Balance Sheets of HEI.
[4] Availability under the Senior Secured Revolving Credit Facility will terminate on December 28, 2019 and any loans thereunder on such date shall convert to secured term loans maturing on December 28, 2022.