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Fair Value Measurements Level 3 (Details) (USD $)
In Thousands, unless otherwise specified
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12 Months Ended |
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Oct. 31, 2011
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Bank Loans And Other Investments Of Consolidated CLO Entity [Member]
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| Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] |
|
| Adjustment for adoption of new consolidation guidance |
$ 5,265 |
| Net losses on investments and note obligations |
1,314 |
| Purchases, sales and settlements, net (asset) |
(1,353) |
| Net transfers in (out) of Level 3 |
684 |
| Fair value measurement with unobservable inputs reconciliation recurring basis asset value, end of period (asset) |
5,910 |
| Change in unrealized gains included in net income relating to assets and liabilities held at end of period (asset) |
1,314 |
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Senior And Subordinated Note Obligations Of Consolidated CLO [Member]
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| Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] |
|
| Adjustment for adoption of new consolidation guidance |
444,087 |
| Net losses on investments and note obligations |
33,612 |
| Fair value measurement with unobservable inputs reconciliation recurring basis liability value, end of period (liability) |
477,699 |
| Change in unrealized gains included in net income relating to assets and liabilities held at end of period (liability) |
$ 33,612 |