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Preferred Stock (Details) | 12 Months Ended |  | 12 Months Ended |  | 3 Months Ended | 5 Months Ended | 9 Months Ended | 12 Months Ended |  |  |
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Oct. 31, 2012 USD ($) | Oct. 31, 2010 USD ($) | Oct. 31, 2011 USD ($) | Oct. 31, 2012 Series B Preferred Stock [Member] USD ($) | Oct. 31, 2011 Series B Preferred Stock [Member] USD ($) | Oct. 31, 2012 Series 2 Preferred Stock [Member] | Oct. 31, 2012 Series 1 Preferred Shares [Member] CAD | Mar. 30, 2012 Series 1 Preferred Shares [Member] CAD | Dec. 31, 2011 Series 1 Preferred Shares [Member] | Oct. 31, 2012 Series 1 Preferred Shares [Member] CAD | Oct. 31, 2011 Series 1 Preferred Shares [Member] USD ($) | Oct. 31, 2011 Series 1 Preferred Shares [Member] CAD | Dec. 31, 2020 Series 1 Preferred Shares [Member] CAD | Oct. 31, 2012 Series 1 Preferred Shares [Member] USD ($) | Mar. 31, 2011 Series 1 Preferred Shares [Member] CAD
Statement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock, Shares Authorized |  |  |  | 250,000 |  |  |  |  |  |  |  |  |  |  |
Preferred Stock, Liquidation Preference Per Share |  |  |  | $ 1,000 |  |  |  |  |  |  |  |  |  |  |
Preferred Stock, Shares Issued |  |  |  | 64,020.0 | 64,020.0 |  |  |  |  |  |  |  |  |  |
Preferred Stock, Shares Outstanding |  |  |  | 64,020.0 | 64,020.0 | 1,000,000 |  |  |  |  |  |  |  |  |
Temporary Equity, Carrying Amount, Attributable to Parent | $ 59,857,000 |  | $ 59,857,000 | $ 59,900,000 |  |  |  |  |  |  |  |  |  |  |
Preferred Stock, Dividends Per Share, Declared |  |  |  | $ 50 |  |  |  |  |  |  |  |  |  |  |
Dividends, Preferred Stock, Cash |  | 3,200,000 |  | 3,200,000 | 3,200,000 |  |  |  |  |  |  |  |  |  |
Preferred Stock, Liquidation Preference, Value | 64,020,000 |  | 64,020,000 | 64,000,000 | 64,000,000 |  |  |  |  |  |  |  |  |  |
Shares of Common Stock Issued Upon Conversion of Each Share of Series B Preferred Stock |  |  |  | 85.1064 |  |  |  |  |  |  |  |  |  |  |
Stock Conversion Price |  |  |  | $ 11.75 |  |  |  |  |  |  |  |  |  |  |
Percent of Conversion Price To Exceed to Exercise Conversion Right |  |  |  | 150.00% |  |  |  |  |  |  |  |  |  |  |
Percent of Voting Power of All Classes of Stock to Become a Beneficial Owner |  |  |  | 50.00% |  |  |  |  |  |  |  |  |  |  |
Percent of Aggregate Voting Power of Voting Stock |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |
Percent of conversion price of Series B Preferred Stock |  |  |  | 105.00% |  |  |  |  |  |  |  |  |  |  |
Percent of Consideration |  |  |  | at least 90 percent of the consideration |  |  |  |  |  |  |  |  |  |  |
Discount on Market Price of Shares of Common Stock |  |  |  | 5.00% |  |  |  |  |  |  |  |  |  |  |
Accrued and Unpaid Dividend Obligation |  |  |  |  |  |  |  |  |  |  |  |  | 21,100,000 |  | 12,500,000
Quarterly Dividend Rate |  |  |  |  |  |  |  |  |  | 1.25% |  |  |  |  |
Percent of Additional Return of Capital Payments |  |  |  |  |  |  |  |  | 9.80% |  |  |  |  |  |
Payments of Dividends |  |  |  |  |  |  |  | 1,250,000 |  | 500,000 |  |  |  |  |
Return of Capital Payments |  |  |  |  |  |  | 187,500 |  |  | 750,000 |  |  |  |  |
Preferred Stock, Redemption Amount |  |  |  |  |  |  |  |  |  |  |  |  | 4,400,000 |  |
Carrying Value of Preferred Shares, Total |  |  |  |  |  |  | 14,200,000 |  |  | 14,200,000 | 16,700,000 | 16,600,000 |  | 14,200,000 | 25,200,000
Adjustments to Additional Paid in Capital, Other |  |  |  |  |  |  |  |  |  |  | 9,000,000 |  |  |  |
Return of Capital and Dividend Payments |  |  |  |  |  |  |  |  |  | 4,400,000 |  | 10,900,000 |  |  |
Interest Expense, Other |  |  |  |  |  |  |  |  |  | 2,000,000 |  | 2,300,000 |  |  |
percent calculated on weighted average price of common shares |  |  |  |  |  |  |  |  |  | the number of common shares is determined by dividing the cash dividend obligation by 95 percent of the volum weighted average price in US dollars |  |  |  |  |
Preferred Stock, Dividend Rate, Percentage |  | 2.45% |  |  |  |  |  |  |  |  |  |  |  |  |
Percent of Annual Dividend Payment Stream | 5 percent annual dividend payment stream |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percent of Common Stock Price |  |  |  |  |  |  |  |  |  | 95.00% |  |  |  |  |
Derivative Liability, Fair Value, Gross Liability | 700,000 |  | 600,000 |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock, Redemption Price Per Share |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 25 |
Preferred Stock Exchange from July 31, 2010 to July 31, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |  | 129.46 |
Preferred Stock Exchange Right Per Common Stock Share |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 138.71 |

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- Definition The per share liquidation preference (or restrictions) of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph d -Article 4 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.(d)(1)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 4, 6 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21484-112644 + Details
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- Definition Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.28) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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Balance Type: | na
Period Type: | instant

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- Definition Carrying amount, attributable to parent, of an entity's issued and outstanding stock which is not included within permanent equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. Includes stock with a put option held by an ESOP and stock redeemable by a holder only in the event of a change in control of the issuer. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant