Shareholders' Equity (Details) (USD $)	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Shares issued under dividend reinvestment plan
Amounts Received/Dividends Reinvested	$ 35,192,639	[1]	$ 18,058,038	[1]	$ 13,938,991	[1]
Common Stock Issued with the DRIP, (Shares)	3,658,010		1,780,043		1,467,214

[1] Dividend Reinvestment and Stock Purchase Plan