Earnings Per Share (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Schedule of Diluted shares
Basic weighted average common stock issued and outstanding	57,797,000	57,027,000	57,496,000	56,999,000
Dilutive options	1,202,808	994,581	1,204,568	1,113,696
Total dilutive shares	59,000,000	58,021,000	58,701,000	58,113,000