Consolidated Statement of Stockholders' Equity (Parenthetical) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Regular Dividend
Dividend on common stock, per share	$ 0.51	$ 0.48	$ 1.02	$ 1.01
Special Dividend
Dividend on common stock, per share		$ 6.66		$ 6.66