Note 12 - Senior Notes and Credit Facilities - Senior Notes and Credit Facilities Balances (Details) - USD ($) $ in Thousands		Jan. 31, 2022	Oct. 31, 2021
Senior debt		$ 1,254,852	$ 1,254,852
Net (discounts) premiums		8,672	10,769
Net debt issuance costs		(16,303)	(17,248)
Total notes payable, net of discounts, premiums and debt issuance costs		1,247,221	1,248,373
Senior Secured Notes [Member]
Senior debt		953,093	953,093
Unsecured Senior Notes Excluding Senior Amortizing Notes and Senior Exchangeable Notes [Member]
Senior debt		180,710	180,710
Senior Unsecured Term Loan Credit Facility Due 2027 [Member]
Senior debt		39,551	39,551
Senior Secured Revolving Credit Facility [Member]
Senior debt	[1]	0	0
The 10.0% Senior Secured 1.75 Lien Notes due 2025 [Member] | Senior Secured Notes [Member]
Senior debt		158,502	158,502
The 7.75% Senior Secured 1.125 Lien Notes due February 15, 2026 [Member] | Senior Secured Notes [Member]
Senior debt		350,000	350,000
The 10.5% Senior Secured 1.25 Lien Notes due February 15, 2026 [Member] | Senior Secured Notes [Member]
Senior debt		282,322	282,322
The 11.25% Senior Secured 1.5 Lien Notes due February 15, 2026 [Member] | Senior Secured Notes [Member]
Senior debt		162,269	162,269
The 8.0% Senior Notes Due 2027 [Member] | Unsecured Senior Notes Excluding Senior Amortizing Notes and Senior Exchangeable Notes [Member]
Senior debt	[2]	0	0
The 13.5% Senior Notes Due 2026 [Member] | Unsecured Senior Notes Excluding Senior Amortizing Notes and Senior Exchangeable Notes [Member]
Senior debt		90,590	90,590
The 5.0% Senior Notes due 2040 [Member] | Unsecured Senior Notes Excluding Senior Amortizing Notes and Senior Exchangeable Notes [Member]
Senior debt		90,120	90,120
The 10.0% Senior Secured 1.75 Lien Term Loans Due 2028 [Member] | Senior Secured Term Loan [Member]
Senior debt		$ 81,498	$ 81,498

[1] At January 31, 2022, provides for up to $125.0 million in aggregate amount of senior secured first lien revolving loans. Availability thereunder will terminate on December 28, 2022.

[2] $26.0 million of 8.0% Senior Notes due 2027 (the "8.0% 2027 Notes") 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.