Summary of Significant Accounting Policies (Details 4) (USD $) In Thousands, except Per Share data	3 Months Ended	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Stock-Based Compensation
Share based compensation expense, before tax	$ 3,266	$ 6,082	$ 8,299	$ 10,809
Share based compensation expense related to discontinued operations, before tax	(334)	879	260	1,692
Share based compensation expense (income), net	(430)	4,721	2,734	8,421
Share based compensation expense per basic and diluted share	$ 0.0	$ 0.02	$ 0.01	$ 0.04
Excess tax benefits from stock-based compensation			57	1,284
Stock based compensation expense
Stock based compensation	3,600	5,203	8,039	9,117
Cost of sales (excluding depreciation and amortization)
Stock based compensation expense
Stock based compensation	45	105	320	140
Selling, general and administrative
Stock based compensation expense
Stock based compensation	$ 3,555	$ 5,098	$ 7,719	$ 8,977

Impact of stock-based compensation expense on earnings per basic and diluted share.

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

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- Definition

Represents the expenses included in discontinued operations, 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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Represents the expenses included in continuing operations, 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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- Details

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- Definition

Represents the expense recognized during the period arising from share-based compensation arrangements (for example, shares of stock, 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 Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph 64
-Subparagraph b

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph A240
-Subparagraph g(1)

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 14
-Section F

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Reductions in the entity's income taxes that arise when compensation cost (from non-qualified share-based compensation) recognized on the entity's tax return exceeds compensation cost from share-based compensation recognized in financial statements. This element represents the cash inflow reported in the enterprise's financing activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph A240
-Subparagraph i

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 00-15
-Paragraph 3

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