Dividend Reinvestment and Stock Purchase Plan (Details) (USD $)	3 Months Ended		37 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014
Dividend Reinvestment and Stock Purchase Plan
Authorized common shares to be issued	6,000,000
Number of common shares issued	55,870	18,237	1,620,212
Amount raised from shares issued	$ 2,300,000	$ 811,000	$ 62,100,000