Consolidated Statements of Changes in Equity (Parentheticals)	0 Months Ended	12 Months Ended
	Sep. 19, 2012	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
TEU Purchase Contracts issued during period, units				2,300,000
Treasury Stock repurchased, shares		44,077	126,606	63,462
Settlement of deferred stock awards, shares			4,859	31,244
Class A Common Stock [Member]
Stock issued for stock compensation, shares		472,982	600,949	880,868
Stock issued during period, shares	3,791,004			3,791,004
Common Stock [Member] | Class B Common Stock to Class A Common Stock [Member]
Conversion of shares to Class A Common Stock, shares		588,504	119,963	463,521
Common Stock [Member] | Series A-1 Preferred Stock to Class A Common Stock [Member]
Conversion of shares to Class A Common Stock, shares			5,984,232