INCOME TAXES (Details) (USD $) In Thousands, unless otherwise specified | 6 Months Ended | 9 Months Ended | |
|---|---|---|---|
Jun. 30, 2011 | Sep. 30, 2011 | Sep. 30, 2010 | |
| INCOME TAXES | |||
| Effective tax rate | 41.30% | 45.70% | 41.50% |
| Long-term deferred tax liabilities, primarily related to purchase accounting intangibles for MediaMind (in dollars) | $ 59,618 | ||