Subsequent Event - Dividend Declaration (Details) (Subsequent Event [Member], Dividend Declared [Member], USD $) In Millions, except Per Share data, unless otherwise specified	1 Months Ended
	Oct. 22, 2013
Subsequent Event [Member] | Dividend Declared [Member]
Subsequent Event [Line Items]
Date of declaration	Oct. 22, 2013
Dividend (in dollars per share)	$ 0.36
Increase in dividend (in dollars per share)	$ 0.03
Increase in dividend (in hundredths)	9.00%
Date of payment	Dec. 02, 2013
Date of record	Nov. 06, 2013
Dividends payable	$ 8.7