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Long-Term Debt (16% Convertible Senior Subordinated Note Due 2016) (Narrative) (Details) (USD $) In Millions, unless otherwise specified		1 Months Ended	9 Months Ended
	Oct. 31, 2009	Nov. 30, 2010 16% Convertible Senior Subordinated Notes Due 2016 [Member]	Jun. 30, 2011 16% Convertible Senior Subordinated Notes Due 2016 [Member]	Oct. 31, 2009 2.875% Convertible Senior Subordinated Notes Due 2016 [Member]
Repurchase and cancellation of convertible senior subordinated notes		$ 10.0
Premium payment under terms of repayment on par			1.7
Debt discount and debt issue cost charged to interest expenses			0.6
Debt instrument, principal outstanding			$ 9.2
Interest rate on secured notes	2.875%		16.00%	2.875%

Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date before deducting unamortized discount or premiums (if any). May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer.

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