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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 Income (Loss) Attributable to Parent	$ 15,282	$ 13,037	$ 8,370	$ (7,526)
Weighted average common shares outstanding, basic	39,150	38,876	39,073	38,773
Weighted average common shares outstanding, diluted	39,813	39,759	39,790	38,773
Basic (in dollars per share)	$ 0.39	$ 0.34	$ 0.21	$ (0.19)
Diluted (in dollars per share)	$ 0.38	$ 0.33	$ 0.21	$ (0.19)

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

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- Definition

The amount of net income (loss) for 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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- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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