CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued
Preferred Stock, Shares Outstanding
Treasury stock, shares	6,405,000	6,405,000
Class A
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	330,000,000	330,000,000
Common stock, shares issued	15,478,000	15,462,000
Common stock, shares outstanding	9,073,000	9,057,000
Class B Convertible
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	165,000,000	165,000,000
Common stock, shares issued	2,227,000	2,227,000
Common stock, shares outstanding	2,227,000	2,227,000