Consolidated Statements of Changes in Equity (Unaudited) (Parenthetical) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Dividends per basic share paid	$ 0.06	$ 0.06	$ 0.12	$ 0.12
Class A Common Stock
Common stock par value	$ 0.001	$ 0.001	$ 0.001	$ 0.001
Class B Common Stock
Common stock par value	$ 0.001	$ 0.001	$ 0.001	$ 0.001
Common Class C [Member]
Common stock par value	$ 0.01	$ 0.01	$ 0.01	$ 0.01
Accumulated (Deficit)
Dividends per basic share paid			$ 0.12	$ 0.12
Stockholders' Equity
Dividends per basic share paid			$ 0.12	$ 0.12