Equity - Narrative (Details) (USD $)	3 Months Ended							9 Months Ended
	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Sep. 30, 2012 class_of_stock	Sep. 30, 2011
Class of Stock [Line Items]
Number of classes of common stock								3
Common stock, per share	$ 0.10	$ 0.10	$ 0.10	$ 0.05	$ 0.05	$ 0.05	$ 0.05	$ 0.30	$ 0.15
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%