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

- Definition

Represents the noncurrent portion of deferred tax liabilities, which result from applying the applicable tax rate to net taxable temporary differences pertaining to each jurisdiction to which the entity is obligated to pay income tax. A noncurrent taxable temporary difference is a difference between the tax basis and the carrying amount of a noncurrent asset or liability in the financial statements prepared in accordance with generally accepted accounting principles. In a classified statement of financial position, an enterprise separates deferred tax liabilities and assets into a current amount and a noncurrent amount. Deferred tax liabilities and assets are classified as current or noncurrent based on the classification of the related asset or liability for financial reporting. A deferred tax liability or asset that is not related to an asset or liability for financial reporting, including deferred tax assets related to carryforwards, are classified according to the expected reversal date of the temporary difference.

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