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Subsequent Event (Details) (USD $) In Millions, unless otherwise specified	Feb. 21, 2012
Subsequent Event [Line Items]
Amortization of the principal balance	$ 5
Term Loan A [Member]
Subsequent Event [Line Items]
Long Term Debt	$ 100

Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date. 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, and after deducting unamortized discount or premiums, if any.

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