Consolidated Statement of Stockholders' Equity (Parenthetical) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Regular Dividend
Dividend on common stock, per share	$ 0.51	$ 0.48	$ 1.53	$ 1.49
Special Dividend
Dividend on common stock, per share				$ 6.66