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Disclosure of Changes in Number of Shares
9 Months Ended
Sep. 30, 2013
Common Stock Member
Sep. 30, 2012
Common Stock Member
Sep. 30, 2013
Preferred Stock Member
Sep. 30, 2012
Preferred Stock Member
Beginning balance 103,193,303 102,634,640 2,006,391 2,006,391
Issuance of stock 171,972 477,665    
Ending balance 103,365,275 103,112,305 2,006,391 2,006,391
Treasury stock - at cost, shares (38,129) (15,162)    
Common Stock - Outstanding 103,327,146 103,097,143