Intangible Assets 1 (Details) (USD $) In Thousands, unless otherwise specified	Jul. 31, 2013	Oct. 31, 2012
Amortizing intangible assets:
Accumulated amortization	$ (65,643)	$ (58,807)
Intangible assets
Gross intangible assets	142,535	118,035
Accumulated amortization	(65,643)	(58,807)
Intangible assets, net	76,892	59,228
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	110,327
Accumulated amortization	(65,394)	(58,681)
Net carrying amount	68,533	51,646
Intangible assets
Accumulated amortization	(65,394)	(58,681)
Intellectual Property Acquired [Member]
Amortizing intangible assets:
Gross carrying amount	1,000	1,000
Accumulated amortization	(174)	(126)
Net carrying amount	826	874
Intangible assets
Accumulated amortization	(174)	(126)
Trademark Acquired [Member]
Amortizing intangible assets:
Gross carrying amount	900
Accumulated amortization	(75)
Net carrying amount	825
Intangible assets
Accumulated amortization	$ (75)