Dividend Reinvestment and Stock Purchase Plan (Details) (USD $) In Millions, except Share data	9 Months Ended
	Sep. 30, 2011
Dividend Reinvestment and Stock Purchase Plan [Abstract]
Dividend Reinvestment and Stock Purchase Plan, authorized amount to issue (in shares)	6,000,000
Dividend Reinvestment and Stock Purchase Plan, number of common shares issued (in shares)	38,643
Net proceeds received from shares issued from Dividend Reinvestment and Stock Plan	$ 1.3