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Note 16 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2022	Apr. 30, 2021	Oct. 31, 2021	Oct. 31, 2020
Income Tax Expense (Benefit), Total	$ 18,510	$ (457,644)	$ 29,103	$ (457,018)
Deferred Tax Assets, Net, Total	400,600		400,600
Deferred Tax Assets, Valuation Allowance, Total	101,600		101,600
Contract Backlog	2,100,000		2,100,000
Federal Deferred Tax Assets Related to NOLs and Other Matters [Member]
Deferred Tax Assets, Valuation Allowance, Total						$ 396,500
Deferred Tax Assets Related to State NOLs [Member]
Deferred Tax Assets, Valuation Allowance, Total					$ 101,600	$ 181,000
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount		(78,100)
Domestic Tax Authority [Member]
Income Tax Expense (Benefit), Total	15,923	(366,270)	23,973	(366,270)
Domestic Tax Authority [Member] | Between 2029 and 2038 [Member]
Operating Loss Carryforwards	1,100,000		1,100,000
Domestic Tax Authority [Member] | Indefinite Tax Period [Member]
Operating Loss Carryforwards	15,700		15,700
State and Local Jurisdiction [Member]
Income Tax Expense (Benefit), Total	2,587	$ (91,374)	5,130	$ (90,748)
Operating Loss Carryforwards	2,400,000		2,400,000
State and Local Jurisdiction [Member] | Indefinite Tax Period [Member]
Operating Loss Carryforwards	53,900		53,900
State and Local Jurisdiction [Member] | Between 2022 and 2026 [Member]
Operating Loss Carryforwards	229,800		229,800
State and Local Jurisdiction [Member] | Between 2027 and 2031 [Member]
Operating Loss Carryforwards	1,500,000		1,500,000
State and Local Jurisdiction [Member] | Between 2032 and 2036 [Member]
Operating Loss Carryforwards	396,500		396,500
State and Local Jurisdiction [Member] | Between 2037 and 2041 [Member]
Operating Loss Carryforwards	$ 170,400		$ 170,400

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