Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to revisions of previously reported income tax expense related a federal specified liability loss refund.

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Note 11 - Income Taxes (Details Textual) - USD ($) $ in Thousands		3 Months Ended								10 Months Ended	12 Months Ended
	Dec. 22, 2017	Oct. 31, 2018	Jul. 31, 2018	Apr. 30, 2018	Jan. 31, 2018	Oct. 31, 2017	Jul. 31, 2017	Apr. 30, 2017	Jan. 31, 2017	Oct. 31, 2018	Oct. 31, 2018	Oct. 31, 2017	Oct. 31, 2016
Income Tax Expense (Benefit), Total		$ 1,939	$ 1,104	$ 245	$ 338	$ 464	$ 287,036	$ (1,017)	$ 466		$ 3,626	$ 286,949	$ 5,255
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%									21.00%	21.00%	35.00%	35.00%
Revaluation of Deferred Tax Asset, Decrease											$ 298,500
Revaluation of Deferred Tax Liabilities, Decrease											12,200
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability											0
Deferred Tax Assets, Valuation Allowance, Total		638,191				918,203				$ 638,191	638,191	$ 918,203
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total		48,117	78	(9,578)	(30,471)	12,305	(50,173)	(7,699)	323		8,146	(45,244)	$ 2,436
Gain (Loss) on Extinguishment of Debt, Total		(1,830)	$ (4,266)	$ (1,440)			$ (42,258)	$ (242)	$ 7,646		(7,536)	$ (34,854)	(3,200)
Increase in Interest Incurred Per Year, Amount											23,400
Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Refunds on Previous Taxes Paid, Percent												(114.80%)
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total		300								300	300
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense, Total											41	$ 45	2
Unrecognized Tax Benefits, Period Increase (Decrease), Total												200
Unrecognized Tax Benefits that Would Impact Effective Tax Rate		1,200				$ 1,100				1,200	1,200	1,100
Domestic Tax Authority [Member]
Operating Income (Loss), Total											0	0	(4,400)
Income Tax Expense (Benefit), Total												275,688	2,798
Domestic Tax Authority [Member] \| Between 2028 and 2037 [Member]
Operating Loss Carryforwards, Total		1,600,000								1,600,000	1,600,000
Domestic Tax Authority [Member] \| Indefinite Tax Period [Member]
Operating Loss Carryforwards, Total		16,400								16,400	16,400
State and Local Jurisdiction [Member]
Operating Income (Loss), Total											(4,400)	(18,200)	(16,400)
Income Tax Expense (Benefit), Total											3,626	$ 11,261	$ 2,457
State and Local Jurisdiction [Member] \| Indefinite Tax Period [Member]
Operating Loss Carryforwards, Total		43,300								43,300	43,300
State and Local Jurisdiction [Member] \| Between 2019 and 2038 [Member]
Operating Loss Carryforwards, Total		2,500,000								2,500,000	2,500,000
State and Local Jurisdiction [Member] \| Between 2019 and 2023 [Member]
Operating Loss Carryforwards, Total		145,300								145,300	145,300
State and Local Jurisdiction [Member] \| Between 2024 and 2028 [Member]
Operating Loss Carryforwards, Total		691,200								691,200	691,200
State and Local Jurisdiction [Member] \| Between 2029 and 2033 [Member]
Operating Loss Carryforwards, Total		1,300,000								1,300,000	1,300,000
State and Local Jurisdiction [Member] \| Between 2034 and 2038 [Member]
Operating Loss Carryforwards, Total		$ 320,000								$ 320,000	$ 320,000