Disclosure of Changes in Number of Shares	6 Months Ended		12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011	Dec. 31, 2009
Treasury stock - at cost, shares	(8,134)	(22,353)	(44,183)
Common Stock - Outstanding	102,824,323	102,397,790	102,590,457
Common Stock Member
Beginning balance	102,634,640	102,292,916	102,292,916	102,292,916
Issuance of stock	197,817	127,227	341,724
Ending balance	102,832,457	102,420,143	102,634,640	102,292,916
Preferred Stock Member
Ending balance	2,006,391	2,006,391	2,006,391