Maximum amount of eligible gross pay an employee may contribute to the Employee Stock Purchase Plan.

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

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-Name Accounting Standards Codification

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-SubTopic 10

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

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- Definition

The amount of expense, net of income tax, 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

No definition available.

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- Definition

As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

+ References

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- Definition

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.

+ References

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- Definition

The discount rate from market value on purchase date that participants pay for shares.

+ References

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- Definition

The highest percentage of annual salary that an employee is permitted to utilize with respect to the plan.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

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-Publisher FASB

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-Number 123R

-Paragraph A240

-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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- Definition

The number of shares purchased on the open market during the period for issuance to employees under the plan.

+ References

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-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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STOCK PLANS (Details 5) (USD $)	12 Months Ended
STOCK PLANS (Details 5) (USD $)	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Stock-based Compensation
Stock-based compensation, pre-tax	$ 10,400,000	$ 9,700,000	$ 9,200,000
Stock-based compensation, after-tax	6,600,000	5,900,000	5,600,000
Compensation cost related to nonvested awards not yet recognized	12,900,000	16,800,000
Weighted average remaining period over which cost to be recognized	1 year 6 months
Low end of range
Stock-based Compensation
Employee contribution as a percentage of eligible gross pay	1.00%
High end of range
Stock-based Compensation
Employee contribution as a percentage of eligible gross pay	10.00%
Employee Stock Purchase Plan
Stock-based Compensation
Discount rate as a percentage of the high and low sale price per share on last trading day	5.00%
Maximum annual employee contribution to Employee Stock Purchase Plan	25,000
Shares purchased by employee		2,567	3,251
Stock options
Stock-based Compensation
Compensation cost related to nonvested awards not yet recognized	300,000	600,000
Restricted stock
Stock-based Compensation
Compensation cost related to nonvested awards not yet recognized	$ 12,700,000	$ 16,200,000