Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Class A
Common Stock, par value	$ 0.01	$ 0.01
Common Stock, shares authorized	12,000,000	12,000,000
Common Stock, shares issued	6,595,708	6,595,708
Common Stock, shares outstanding	6,595,708	6,595,708
Class B
Common Stock, par value	$ 0.01	$ 0.01
Common Stock, shares authorized	150,000,000	150,000,000
Common Stock, shares issued	91,427,258	91,021,377
Common Stock, shares outstanding	91,427,258	91,021,377
Class C
Common Stock, par value	$ 0.01	$ 0.01
Common Stock, shares authorized	1,200,000	1,200,000
Common Stock, shares issued	664,000	664,000
Common Stock, shares outstanding	664,000	664,000
Class D
Common Stock, par value	$ 0.01	$ 0.01
Common Stock, shares authorized	5,000,000	5,000,000
Common Stock, shares issued	29,121	29,999
Common Stock, shares outstanding	29,121	29,999