Summary Of Major Accounting Policies Summary of Major Accounting Policies - Subsequent Event (Details) (USD $)	3 Months Ended								6 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Jun. 30, 2013
Accounting Policies [Abstract]
Common Stock, Dividends, Per Share, Cash Paid	$ 0.22	$ 0.18	$ 0.18	$ 0.18	$ 0.15	$ 0.15	$ 0.15	$ 0.15	$ 0.18