EQUITY-BASED COMPENSATION (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended	9 Months Ended	12 Months Ended
Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
EQUITY-BASED COMPENSATION [Abstract]
Estimated forfeiture rate			3.00%
Aggregate fair value of stock vested	$ 1.1	$ 0.8	$ 5.7	$ 4.4
Shares issued relating to vesting of restricted stock awards, shares			448,015		521,840
Value of unvested restricted stock	$ 8.3		$ 8.3
Weighted-average recognition period for unvested restricted stock			2 years 1 month 6 days
Shares issued upon excercise of options			109,167		75,000

ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsEstimatedForfeitureRate

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- Definition

The aggregate fair value of nonvested restricted stock awards for which the employer is contingently obligated to issue restricted stock to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

+ References

No definition available.

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- Definition

Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

The total fair value of equity-based awards for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

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- Definition

Number of shares issued during the period related to Restricted Stock Awards, net of any shares forfeited.

+ References

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-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

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- Definition

Number of share options (or share units) exercised during the current period.

+ References

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