Subsequent Events (Details) (USD $) In Millions, except Share data, unless otherwise specified			1 Months Ended						1 Months Ended		1 Months Ended
	Jun. 30, 2012	Sep. 30, 2011	Jul. 31, 2012 Subsequent Event	Jul. 31, 2012 Subsequent Event Issuance of Equity	Jul. 31, 2012 Subsequent Event Settlement of Debt	Jul. 31, 2012 Tangible Equity Units Subsequent Event Issuance of Equity TEUs	Jul. 31, 2012 6.625% Senior Secured Notes Subsequent Event Issuance of Debt	Jul. 31, 2012 12% Senior Secured Notes Maturing October 2017 Subsequent Event Settlement of Debt	Jul. 31, 2012 Common Stock Subsequent Event Issuance of Equity	Nov. 30, 2010 Cash Secured Loan	Jul. 31, 2012 Cash Secured Loan Subsequent Event Settlement of Debt
Subsequent Event [Line Items]
Shares issued in public offering									22,000,000
Stock price (US$ per share)									$ 2.90
Tangible Equity Units (TEUs) issued during period, (units)						4,600,000
Debt instrument stated interest rate (percent)						7.50%	6.625%	12.00%
Aggregate principal amount of debt							$ 300.0			$ 32.6
Net proceeds expected from issuance of common stock, Tangible Equity Units and debt				466
Additional shares that could be purchased to cover over-allotments				3,300,000
Common stock, shares outstanding	101,116,819	75,588,396	123,000,000
Outstanding senior secured debt instrument principal amount redeemed								250
Outstanding cash secured loan repaid in period											20
Net cash used for secured debt redemptions					300
Expected decrease in annualized interest expense			$ 15