Summary of Significant Accounting Policies (Schedule of Stock by Class) (Details)	6 Months Ended	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2012
Class A [Member]
Common Stock, Shares, Oustanding [Roll Forward]
Common Stock, Shares, Outstanding	57,813,267	58,434,704
Stock Issued During Period, Shares, Conversion of Convertible Securities		1,750,000
Stock Issued During Period, Shares, New Issues	621,437	406,326
Common Stock, Shares, Outstanding	58,434,704	60,591,030
Class B [Member]
Common Stock, Shares, Oustanding [Roll Forward]
Common Stock, Shares, Outstanding	13,534,408	13,534,408
Stock Issued During Period, Shares, Conversion of Convertible Securities		(1,750,000)
Stock Issued During Period, Shares, New Issues	0	0
Common Stock, Shares, Outstanding	13,534,408	11,784,408