Subsequent Events (Details) (USD $)	0 Months Ended	3 Months Ended		0 Months Ended
	Sep. 19, 2012	Sep. 30, 2012	Aug. 17, 2012	Nov. 06, 2012 Dividends Declared [Member]	Nov. 05, 2012 Dividends Declared [Member]
Subsequent Event [Line Items]
Dividends payable amount per share in each quarter (in dollars per share)			$ 0.25		$ 0.0625
Date of dividends declared		Aug. 17, 2012		Nov. 05, 2012
Date dividends paid	Sep. 19, 2012			Dec. 14, 2012
Date of stockholders of record		Sep. 05, 2012		Nov. 20, 2012