Earnings Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Earnings Per Share [Abstract]
Net (loss) income	$ (16,624)	$ 21,531	$ (24,685)	$ (36,747)
Basic weighted-average shares outstanding	129,046	127,885	128,854	127,555
Dilutive impact of stock options and restricted shares		1,195
Dilutive impact of common stock warrants		7,832
Diluted weighted-average shares outstanding	129,046	136,912	128,854	127,555
Earnings (loss) per share attributable to continuing operations:
Basic	$ (0.13)	$ 0.17	$ (0.19)	$ (0.29)
Diluted	$ (0.13)	$ 0.16	$ (0.19)	$ (0.29)

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The amount of net income (loss) from continuing operations per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) derived from continuing operations during the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of call options and warrants using the treasury stock 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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