SEGMENT REPORTING - Adjusted Net Income (Additional Information) (Detail) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
---|---|---|---|---|
Jun. 30, 2015 |
Jun. 30, 2014 |
Jun. 30, 2015 |
Jun. 30, 2014 |
|
Investment Management | ||||
Segment Reporting, Asset Reconciling Item [Line Items] | ||||
Interest income | $ 1.2 | $ 0.7 | $ 2.2 | $ 1.8 |