Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Unrecognized cost of unvested share-based compensation awards.

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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 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 difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Number of options outstanding, including both vested and non-vested options.

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COMPENSATION PLANS (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding non-vested equity-based awards, end of period (in shares)	481,288		464,769
Period over which grants vest (in years)	3 years
Allocated Share-based Compensation Expense	$ 0.9	$ 0.8
Total unrecognized compensation expense	$ 6.8
Performance Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding non-vested equity-based awards, end of period (in shares)	383,447
Period over which grants vest (in years)	3 years
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding non-qualified stock options, end of period (in shares)	319,972
Period over which grants vest (in years)	3 years
Common Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock available for issuance under the Plan (in shares)	2,900,000
Restricted Stock Awards, Granted To Newly Hired Employees \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period over which grants vest (in years)	1 year
Restricted Stock Awards, Granted To Newly Hired Employees \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period over which grants vest (in years)	4 years
2015 Performance Units [Member] \| Performance Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding non-vested equity-based awards, end of period (in shares)	378,150
2012-2013 Performance [Member] \| Performance Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding non-vested equity-based awards, end of period (in shares)	5,297