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Note 11 - Income Taxes (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Oct. 31, 2016 | Jul. 31, 2016 | Apr. 30, 2016 | Jan. 31, 2016 | Oct. 31, 2015 | Jul. 31, 2015 | Apr. 30, 2015 | Jan. 31, 2015 | Oct. 31, 2016 | Oct. 31, 2015 | Oct. 31, 2014
Income Tax Expense (Benefit) | $ 9,852 | $ 1,567 | $ (9,143) | $ 2,979 | $ 11,878 | $ (2,317) | $ (9,922) | $ (5,304) | $ 5,255 | $ (5,665) | $ (286,964)
Deferred Tax Assets, Valuation Allowance | 627,943 |  |  |  | 635,305 |  |  |  | $ 627,943 | $ 635,305 |
Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Refunds on Previous Taxes Paid, Percent |  |  |  |  |  |  |  |  | (114.80%) | 0.00% | (9.80%)
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued | 300 |  |  |  | 300 |  |  |  | $ 300 | $ 300 |
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense |  |  |  |  |  |  |  |  | (2) | (91) | $ (30)
Unrecognized Tax Benefits, Period Increase (Decrease) |  |  |  |  |  |  |  |  | (200) |  |
Unrecognized Tax Benefits that Would Impact Effective Tax Rate | 1,100 |  |  |  | $ 1,100 |  |  |  | $ 1,100 | 1,100 |
Earliest Tax Year [Member] |  |  |  |  |  |  |  |  |  |  |
Open Tax Year |  |  |  |  |  |  |  |  | 2012 |  |
Latest Tax Year [Member] |  |  |  |  |  |  |  |  |  |  |
Open Tax Year |  |  |  |  |  |  |  |  | 2015 |  |
State and Local Jurisdiction [Member] |  |  |  |  |  |  |  |  |  |  |
Income Tax Expense (Benefit) |  |  |  |  |  |  |  |  | $ 2,457 | 4,293 | (12,452)
Operating Loss Carryforwards | 2,200,000 |  |  |  |  |  |  |  | 2,200,000 |  |
Operating Income (Loss) |  |  |  |  |  |  |  |  | 16,400 | 12,300 | 24,500
Domestic Tax Authority [Member] |  |  |  |  |  |  |  |  |  |  |
Income Tax Expense (Benefit) |  |  |  |  |  |  |  |  | 2,798 | (9,958) | (274,512)
Operating Loss Carryforwards | $ 1,500,000 |  |  |  |  |  |  |  | 1,500,000 |  |
Operating Income (Loss) |  |  |  |  |  |  |  |  | $ 4,400 | $ 3,700 | $ 57,800

X
- Definition 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. + References No definition available. + Details
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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32537-109319 + Details
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32639-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Income Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6515339 + Details
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- Definition Tax year that remains open to examination under enacted tax laws, in CCYY format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32718-109319 + Details
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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32559-109319 + Details
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- Definition Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32718-109319 + Details
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- Definition Amount of increase (decrease) in unrecognized tax benefits attributable to uncertain tax positions taken in tax returns. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=65882285&loc=SL6600010-109319 + Details
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