Acquisitions, Goodwill and Intangible Assets 3 (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Oct. 31, 2014	Oct. 31, 2013
Amortizing intangible assets:
Accumulated amortization	$ (77,409)	$ (68,001)
Intangible assets
Gross intangible assets	142,535	142,535
Accumulated amortization	(77,409)	(68,001)
Intangible assets, net	65,126	74,534
Mutual Fund Management Contract Acquired [Member]
Non-amortizing intangible assets:
Net carrying amount	6,708	6,708
Client Relationships Acquired [Member]
Amortizing intangible assets:
Gross carrying amount	133,927	133,927
Accumulated amortization	(76,918)	(67,703)
Net carrying amount	57,009	66,224
Weighted-average remaining amortization period (in years)	9 years 4 months	9 years 10 months
Intangible assets
Accumulated amortization	(76,918)	(67,703)
Intellectual Property Acquired [Member]
Amortizing intangible assets:
Gross carrying amount	1,000	1,000
Accumulated amortization	(255)	(191)
Net carrying amount	745	809
Weighted-average remaining amortization period (in years)	11 years 7 months	12 years 7 months
Intangible assets
Accumulated amortization	(255)	(191)
Trademark Acquired [Member]
Amortizing intangible assets:
Gross carrying amount	900	900
Accumulated amortization	(236)	(107)
Net carrying amount	664	793
Weighted-average remaining amortization period (in years)	5 years 2 months	6 years 2 months
Intangible assets
Accumulated amortization	$ (236)	$ (107)