|
Concentration of Credit Risk and Significant Relationships (Details) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Oct. 31, 2011
|
Oct. 31, 2010
|
Oct. 31, 2009
|
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|
Large Cap Value Portfolio And Related Funds [Member]
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| Major Customers [Line Items] | |||
| Major customer revenue | $ 127,650 | $ 126,565 | $ 94,665 |
| Percent of total revenue | 10.10% | 11.30% | 10.60% |
|
Tax Managed Growth Portfolio And Related Funds [Member]
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| Major Customers [Line Items] | |||
| Major customer revenue | $ 100,933 | ||
| Percent of total revenue | 11.30% | ||