Dividend Payment (Details Textual) (USD $) In Millions, except Per Share data, unless otherwise specified	0 Months Ended			3 Months Ended		9 Months Ended
	Sep. 20, 2013	Jun. 20, 2013	Mar. 20, 2013	Oct. 05, 2013	Oct. 06, 2012	Oct. 05, 2013	Oct. 06, 2012
Common Stock, Dividends, Per Share, Declared (in dollars per share)	$ 0.09	$ 0.08	$ 0.08	$ 0.09	$ 0.08	$ 0.25	$ 0.23
Dividends, Common Stock, Cash (in dollars)	$ 1.2	$ 1.1	$ 1.1