Consolidated Statements of Changes in Equity (Parentheticals)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
TEU Purchase Contracts issued during period, units		2,300,000
Treasury stock, shares, acquired	126,606	63,462
Settlement of deferred stock awards, shares	4,859	31,244
Class B common stock to Class A common stock [Member]
Stock Issued During Period, Shares, Conversion of Convertible Securities	119,963	273,021
Series A-1 Preferred Stock to Class A common stock [Member]
Stock Issued During Period, Shares, Conversion of Convertible Securities	5,984,232
Class A common stock [Member]
Stock issued during period, shares		3,791,004