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Earnings Per Share - Additional Information (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Equity [Abstract]
Basic and diluted weighted-average common and common shares outstanding	38,167,000	34,070,000	35,568,000	33,902,000
Acquisition of common stock from anti-dilutive securities	4,761,066	5,668,752	5,313,009	5,885,100

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- Definition

Acquisition of Common Stock from Anti Dilutive Securities

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No definition available.

+ Details

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- Details

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- Definition

Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS).

+ References

No definition available.

+ Details

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