Equity - Narrative (Details) (USD $)	3 Months Ended					6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Jun. 30, 2012 class_of_stock	Jun. 30, 2011
Class of Stock [Line Items]
Number of classes of common stock						3
Common stock, per share	$ 0.10	$ 0.05	$ 0.05	$ 0.05	$ 0.05	$ 0.20	$ 0.10
Preferred stock, Series C, shares outstanding	57,578	57,578				57,578
Common Stock, Class A Voting
Class of Stock [Line Items]
Maximum ownership percentage of common stock by beneficial owner	33.00%					33.00%