| Summary of non-operating income (expense) |
| | | | Three Months Ended | Six Months Ended | | | | | April 30, | | April 30, | | | (in thousands) | | 2017 | | 2016 | | 2017 | | 2016 | | | Interest and other income | $ | 5,958 | $ | 4,186 | $ | 10,601 | $ | 5,361 | | | Net gains (losses) on investments and derivatives | | 3,483 | | 789 | | (453) | | 1,374 | | | Net foreign currency losses | | (153) | | (1,186) | | (366) | | (106) | | | Gains and other investment income, net | | 9,288 | | 3,789 | | 9,782 | | 6,629 | | | Interest expense | | (8,065) | | (7,340) | | (15,412) | | (14,682) | | | Other income (expense) of consolidated CLO entity: | | | | | | | | | | | | Interest income | | - | | 4,850 | | - | | 8,593 | | | | Net gains on bank loans, other investments and | | | | | | | | | | | | note obligations | | - | | 9,058 | | - | | 8,594 | | | | Gains and other investment income, net | | - | | 13,908 | | - | | 17,187 | | | | Interest expense | | - | | (2,878) | | - | | (4,714) | | | Total non-operating income (expense) | $ | 1,223 | $ | 7,479 | $ | (5,630) | $ | 4,420 |
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