Additional income per share.

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Antidilutive securities excluded from computation of earnings per share amount due to loss from continuing operations.

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Income per share.

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented.

+ References

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

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-Name Statement of Financial Accounting Standard (FAS)

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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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The exercise price of each class of warrants or rights outstanding.

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-Number 210

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The specified number of securities that each class of warrants or rights outstanding give the holder the right but not the obligation to purchase from the issuer at a specific price, on or before a certain date.

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The effective interest rate on the liability component of convertible debt instrument which may be settled in cash upon conversion, including partial cash settlement.

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The number of equity instruments that the holder of the debt instrument would receive if the debt was converted to equity.

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-Name Statement of Financial Accounting Standard (FAS)

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Income Per Share (Details Textual) (USD $)	3 Months Ended		9 Months Ended			3 Months Ended		9 Months Ended
Income Per Share (Details Textual) (USD $)	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2010	Sep. 30, 2011 Antidilutive Securities Nine Months [Member]	Sep. 30, 2010 Antidilutive Securities Nine Months [Member]	Sep. 30, 2011 Antidilutive Securities Three Months [Member]	Sep. 30, 2010 Antidilutive Securities Three Months [Member]	Sep. 30, 2011 Convertible Notes Payable [Member]
Additional Income Per Share (Textual) [Abstract]
Effect of dilutive stock-based compensation awards	567,000	629,000	570,000
Shares that may be issued upon conversion spread		294,000
Initial exercise price under warrant	$ 32.70
Approximate number of common stock share which can be purchased under warrants	13,200,000
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock-based compensation awards outstanding				1,025,000	2,008,000	1,735,000	1,990,000
Income Per Share (Textual) [Abstract]
Convertible senior note due 2014								3.75%