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Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2012

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Weighted-Average Assumptions Used To Value The Options Granted

		Three Months Ended
		March 31,
		2012				2011
Expected term of options			6.3 years				6.4 years
Expected volatility			42	%			41	%
Risk-free interest rate			1.314	%			2.679	%
Dividend yield			zero				zero

Summary Of Stock Options

										Weighted-
						Weighted-				Average
						Exercise				Remaining				Aggregate
		Number of				Average				Contractual				Intrinsic
(in thousands, except per share data)		Options				Price				Term (Years)				Value
Outstanding as of December 31, 2011			4,525			$	19.69				5.05
Granted			417			$	15.80
Exercised			(116	)		$	11.81
Forfeited or expired			(89	)		$	18.70
Outstanding as of March 31, 2012			4,737			$	19.56				5.26			$	3,495
Exercisable as of March 31, 2012			3,665			$	20.52				4.28			$	2,304

Restricted Shares [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Summary Of Stock-Based Awards

						Weighted-
						Average
						Grant Date
(in thousands, except per share data)		Shares				Fair Value
Non-vested shares outstanding as of December 31, 2011			244			$	18.23
Granted			205			$	15.57
Vested			(44	)		$	18.42
Forfeited			(17	)		$	17.74
Non-vested shares outstanding as of March 31, 2012			388			$	16.82

Restricted Stock Units And Phantom Stock Awards [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Summary Of Stock-Based Awards

						Weighted-
						Average
						Grant Date
(in thousands, except per share data)		Shares				Fair Value
Non-vested shares outstanding as of December 31, 2011			83			$	17.88
Granted			54			$	16.03
Vested			(19	)		$	17.68
Forfeited			(2	)		$	18.05
Non-vested shares outstanding as of March 31, 2012			116			$	17.05

Performance Based Restricted Stock Units [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Summary Of Stock-Based Awards

						Weighted-
						Average
						Grant Date
(in thousands, except per share data)		Shares				Fair Value
Non-vested shares outstanding as of December 31, 2011			68			$	18.57
Granted(1)			103			$	15.11
Forfeited			(7	)		$	18.57
Non-vested shares outstanding as of March 31, 2012			164			$	16.39

⁽¹⁾ Represents target number of shares that can vest based on the achievement of certain performance criteria.

X

- Definition

Tabular disclosure of components of a stock option or other award plan under which equity-based compensation is awarded to employees, typically comprised of the amount of unearned compensation (deferred compensation cost), compensation expense, and changes in the quantity and fair value of the shares (or other type of equity) granted, exercised, forfeited, and issued and outstanding pertaining to that plan. Disclosure may also include nature and general terms of such arrangements that existed during the period and potential effects of those arrangements on shareholders, effect of compensation cost arising from equity-based payment arrangements on the income statement, method of estimating the fair value of the goods or services received, or the fair value of the equity instruments granted, during the period, cash flow effects resulting from equity-based payment arrangements and, for registrants that accelerate vesting of out of the money share options, reasons for the decision to accelerate.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph 64, 65, 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.



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901



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-Name Accounting Standards Codification

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X

- Definition

Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.

+ References

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

-Topic 718

-SubTopic 10

-Publisher FASB

-Number

-Article

-Subparagraph (c)(1)

-Name Accounting Standards Codification

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X

- Definition

Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

+ References

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-Publisher FASB

-Number

-Article

-Subparagraph (f)(2)

-Name Accounting Standards Codification

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