Earnings Per Share

6 Months Ended

Jun. 30, 2011

Earnings Per Share [Abstract]

Earnings Per Share [Text Block]

EARNINGS PER SHARE

Earnings Per Share.  Basic income per share is computed based upon the weighted-average number of common shares outstanding, excluding unvested restricted stock.  Diluted income per share is computed based upon the weighted-average number of common shares outstanding, including the dilutive effect of common stock equivalents outstanding during the periods.  Potentially dilutive common stock equivalents primarily consist of employee stock options, unvested restricted stock, and restricted stock units (“Equity-based Incentive Awards”).

Potentially dilutive common shares from Equity-based Incentive Awards are determined by applying the treasury stock method to the assumed exercise of outstanding employee stock options, and the assumed vesting of outstanding unvested restricted stock and restricted stock units.  The following table presents the weighted-average number of common shares outstanding used in the calculation of basic and diluted income per share:

	Three Months Ended June 30,		Six Months Ended June 30,
	2011	2010	2011	2010
Weighted-average common shares outstanding - basic	40,994,082	31,664,869	38,104,500	31,258,394
Dilutive effect of Equity-based Incentive Awards	1,459,700	—	1,373,116	2,875,594
Weighted-average common shares outstanding - diluted	42,453,782	31,664,869	39,477,616	34,133,988
Equity-based Incentive Awards excluded from the computation of diluted income per share because the effect of inclusion would have been anti-dilutive	37,760	4,281,668	69,960	254,538