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Earnings Per Share (Details)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Schedule Of Weighted Average Number Of Shares Outstanding Basic To Diluted
Basic shares outstanding	99,557,000	98,876,000
Effect of potential common stock
Common stock awards	864,000	892,000
Senior subordinated convertible notes	151,000	218,000
Diluted shares outstanding	100,572,000	99,986,000
Antidilutive stock options	1,093,600	568,850

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

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of convertible debt securities using the if-converted method.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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