Earnings per Share (Tables)

6 Months Ended

Jun. 30, 2011

Earnings per Share

Schedule of Weighted Average Number of Shares

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2010		2011		2010		2011
Weighted average common shares outstanding for basic calculation		120,340,272		145,165,549		120,395,405		145,010,867
Add: Effect of stock options and restricted stock		748,148		798,855		687,099		712,178
Weighted average common shares outstanding for diluted calculation		121,088,420		145,964,404		121,082,504		145,723,045