Note 16 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Jul. 31, 2022	Jul. 31, 2021	Apr. 30, 2021	Jul. 31, 2022	Jul. 31, 2021	Oct. 31, 2021	Oct. 31, 2020
Income Tax Expense (Benefit), Total	$ 29,313	$ 14,097		$ 58,416	$ (442,921)
Deferred Tax Assets, Net, Total	376,600			376,600
Deferred Tax Assets, Valuation Allowance, Total	80,600			80,600
Contract Backlog	1,800			1,800
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	22,928	12,621		46,901	(353,649)
Domestic Tax Authority [Member] | Between 2029 and 2038 [Member]
Operating Loss Carryforwards	1,000,000			1,000,000
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	6,385	$ 1,476		11,515	$ (89,272)
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