SHARE-BASED COMPENSATION (Details) (USD $)	6 Months Ended
Jun. 30, 2013
Restricted Stock Awards
Restricted stock activity
Outstanding at the beginning of the period (in units)	1,281,480
Vested (in units)	(132,020)
Forfeited (in units)	(1,950)
Outstanding at the end of the period (in units)	1,147,510
Stock Options
Stock options activity
Outstanding at the beginning of the period (in shares)	240,425
Forfeited (in shares)	(98,000)
Outstanding at the end of the period (in shares)	142,425
Weighted-Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)	$ 27.40
Forfeited (in dollars per share)	$ 24.94
Outstanding at the end of the period (in dollars per share)	$ 29.10
Weighted-Average Remaining Contractual Term
Options outstanding	7 months 6 days
Intrinsic Value
Options outstanding (in dollars)	$ 0

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(i)-(ii)

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of options outstanding.

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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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

-Publisher FASB

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-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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