Dividends (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	0 Months Ended		3 Months Ended		9 Months Ended
	Jul. 26, 2012	Jul. 26, 2011	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Aug. 23, 2012	Aug. 24, 2011
Dividends (Textual) [Abstract]
Board of Directors declared a cash dividend	$ 0.04	$ 0.04	$ 0.04	$ 0.040	$ 0.12	$ 0.110
Payment to shareholders							$ 2.2	$ 2.5