XML 21 R13.htm IDEA: XBRL DOCUMENT  v2.3.0.11
Shareholders' Equity (Tables)
6 Months Ended
Jun. 30, 2011
Shareholders' Equity  
Schedule Of ATM Program

Period

   Aggregate
Number of
Shares Sold
     Aggregate
Gross
Proceeds
     Aggregate
Net Proceeds
     Average Sales
Price Per Share
 

First quarter 2011

     1,516,379       $ 49,575,000       $ 48,400,000       $ 32.69