Subsequent Events (Details Textual) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended		1 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 23, 2014 Common Class A [Member]	Sep. 23, 2014 Common Class B [Member]	Oct. 17, 2014 Subsequent Event [Member]
Subsequent Event [Line Items]
Common Stock, Dividends, Per Share, Declared	$ 0.20	$ 0	$ 0.40	$ 0	$ 0.20	$ 0.20
Dividends							$ 1.1