STOCK BASED COMPENSATION PLANS (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
Mar. 31, 2016	Mar. 31, 2015
Employee Stock Option [Member]
Shares
Stock options outstanding at beginning of the year (in shares)	3,490,421	3,313,869
Granted (in shares)	0	857,000
Exercised (in shares)	(18,567)	(34,248)
Forfeited (in shares)	(6,180)	(32,209)
Expired (in shares)	0	0
Stock options outstanding at the end of the year (in shares)	3,465,674	4,104,412
Weighted Average Exercise Price
Stock options outstanding, beginning period (in dollars per share)	$ 16.40	$ 15.89
Granted (in dollars per share)	0.00	17.18
Exercised (in dollars per share)	16.34	15.11
Forfeited (in dollars per share)	15.95	17.18
Expired (in dollars per share)	0.00	0.00
Stock options outstanding, ending period (in dollars per share)	$ 16.30	$ 16.16
Stock options becoming fully vested and exercisable (in shares)	1,792,875
Intrinsic value of options vested	$ 4.7
Weighted Average Exercise Price (in dollars per share)	$ 15.74
Weighted average contractual term	6 years 9 months 6 days
Allocated Share-based Compensation Expense		$ 0.5
Restricted Stock [Member]
Weighted Average Exercise Price
Allocated Share-based Compensation Expense	$ 0.3	$ 0.4
Weighted average remaining contractual term	1 year 9 months 26 days

Represents the intrinsic value of stock options, which are currently vested at the end of the period.

No definition available.

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The weighted average exercise price of options that are fully vested at the end of the period and are currently exerciseable.

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No definition available.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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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.

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- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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- Definition

Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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- Definition

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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- Definition

Net number of share options (or share units) granted during the period.

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

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

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

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- Definition

Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

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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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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Weighted average remaining contractual term for fully vested and expected to vest options outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

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

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