SHARE-BASED COMPENSATION (Details 3) (Restricted Stock Awards and Units, USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2014
Activity of nonvested shares
Nonvested at the beginning of the period (in shares)	835,904
Changes during the period:
Granted (in shares)	198,215
Forfeited (in shares)	(40,228)
Vested (in shares)	(278,431)
Nonvested at the end of the period (in shares)	715,460
Vested and expected to vest at the end of the period (in shares)	715,460
Weighted Average Grant Date Fair Value
Nonvested at the beginning of the period (in dollars per share)	$ 14.75
Changes during the period:
Granted (in dollars per share)	$ 18.61
Forfeited (in dollars per share)	$ 14.88
Vested (in dollars per share)	$ 14.63
Nonvested at the end of the period (in dollars per share)	$ 15.77
Vested and expected to vest at the end of the period (in dollars per share)	$ 15.77
Additional disclosures
Total compensation cost not yet recognized (in dollars)	$ 7.0
Weighted-average period for recognition of compensation cost not yet recognized	2 years 6 months
Minimum
SHARE-BASED COMPENSATION
Vesting period	3 years
Maximum
SHARE-BASED COMPENSATION
Vesting period	5 years

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As of the balance sheet date, the number of shares under equity-based payment instruments, excluding stock (or unit) options that are vested or expected to vest.

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As of the balance sheet date, the weighted-average grant date fair value for outstanding equity-based awards other than stock (or unit) option plans that are fully vested or expected to vest.

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Unrecognized cost of unvested share-based compensation awards.

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-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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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.

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The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets 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.

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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 weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan 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.

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