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Fair Value of Assets and Liabilities (Details Textual)
Oct. 02, 2011
Senior Note due 2017 [Member]
Oct. 20, 2009
Senior Note due 2017 [Member]
Oct. 02, 2011
Senior Notes Due 2021 [Member]
Feb. 10, 2011
Senior Notes Due 2021 [Member]
Fair Value of Assets and Liabilities (Textual)[Abstract]    
Percentage Rate of Senior Note7.75%7.75%6.625%6.625%