Intangible Assets 3 (Details) - USD ($)
$ in Thousands |
Apr. 30, 2017 |
Oct. 31, 2016 |
| Amortizing intangible assets: |
|
|
| Accumulated amortization |
$ (100,286)
|
$ (95,751)
|
| Total Intangible assets |
|
|
| Gross intangible assets |
194,576
|
142,560
|
| Accumulated amortization |
(100,286)
|
(95,751)
|
| Intangible assets, net |
94,290
|
46,809
|
| Mutual Fund Management Contract Acquired [Member] |
|
|
| Non-amortizing intangible assets: |
|
|
| Net carrying amount |
54,408
|
6,708
|
| Client Relationships Acquired [Member] |
|
|
| Amortizing intangible assets: |
|
|
| Gross carrying amount |
134,247
|
133,927
|
| Accumulated amortization |
(99,159)
|
(94,873)
|
| Net carrying amount |
35,088
|
39,054
|
| Total Intangible assets |
|
|
| Accumulated amortization |
(99,159)
|
(94,873)
|
| Intellectual Property Acquired [Member] |
|
|
| Amortizing intangible assets: |
|
|
| Gross carrying amount |
1,025
|
1,025
|
| Accumulated amortization |
(419)
|
(385)
|
| Net carrying amount |
606
|
640
|
| Total Intangible assets |
|
|
| Accumulated amortization |
(419)
|
(385)
|
| Trademark Acquired [Member] |
|
|
| Amortizing intangible assets: |
|
|
| Gross carrying amount |
4,257
|
900
|
| Accumulated amortization |
(637)
|
(493)
|
| Net carrying amount |
3,620
|
407
|
| Total Intangible assets |
|
|
| Accumulated amortization |
(637)
|
$ (493)
|
| Research System [Member] |
|
|
| Amortizing intangible assets: |
|
|
| Gross carrying amount |
639
|
|
| Accumulated amortization |
(71)
|
|
| Net carrying amount |
568
|
|
| Total Intangible assets |
|
|
| Accumulated amortization |
$ (71)
|
|