|
Fair Value Measurements Level 3 (Details) (USD $)
In Thousands, unless otherwise specified
|
3 Months Ended |
6 Months Ended |
12 Months Ended |
|
Apr. 30, 2013
|
Apr. 30, 2012
|
Apr. 30, 2013
|
Apr. 30, 2012
|
Oct. 31, 2012
|
| Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] |
|
|
|
|
|
| Principal repayments of senior notes |
|
|
$ (83,742) |
|
|
|
Bank Loans And Other Investments Of Consolidated CLO Entity [Member]
|
|
|
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] |
|
|
|
|
|
| Fair value measurements with unobservable inputs reconciliation recurring basis asset value, beginning of period (asset) |
2,658 |
4,728 |
2,203 |
5,910 |
5,910 |
| Net gains (losses) on investments and note obligations included in net income |
57 |
(9) |
21 |
(49) |
|
| Transfers into Level 3 (asset) |
104 |
15 |
595 |
15 |
|
| Transfers out of Level 3 (asset) |
0 |
(2,584) |
0 |
(3,726) |
|
| Fair value measurements with unobservable inputs reconciliation recurring basis asset value, end of period (asset) |
2,819 |
2,150 |
2,819 |
2,150 |
|
| Change in unrealized gains and (losses) included in net income relating to assets and liabilities held (asset) |
57 |
(9) |
21 |
(49) |
|
|
Senior And Subordinated Note Obligations Of Consolidated CLO [Member]
|
|
|
|
|
|
| Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] |
|
|
|
|
|
| Fair value measurements with unobservable inputs reconciliation recurring basis liability value, beginning of period (liability) |
408,924 |
480,345 |
443,946 |
477,699 |
477,699 |
| Net gains (losses) on investments and note obligations included in net income |
1,671 |
5,301 |
5,256 |
7,947 |
|
| Principal repayments of senior notes |
(45,135) |
|
(83,742) |
|
|
| Transfers out of Level 3 (liability) |
0 |
(2,584) |
0 |
(2,584) |
|
| Fair value measurements with unobservable inputs reconciliation recurring basis liability value, end of period (liability) |
365,460 |
483,062 |
365,460 |
483,062 |
443,946 |
| Change in unrealized gains and (losses) included in net income relating to assets and liabilities held (liability) |
$ 1,671 |
$ 5,301 |
$ 5,256 |
$ 7,947 |
|
| Senior and subordinated note obligations prepayment rate |
|
|
30.00% |
|
30.00% |
| Senior and subordinated note obligations recovery rate |
|
|
70.00% |
|
70.00% |
| Senior and subordinated note obligations probability of default |
|
|
2.00% |
|
2.00% |
| Senior and subordinated note obligations minimum discount rate |
|
|
1.05% |
|
1.35% |
| Senior and subordinated note obligations maximum discount rate |
|
|
4.50% |
|
7.00% |