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Derivative Contracts (Details Textual)
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Jun. 30, 2013
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Jan. 30, 2013
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Dec. 31, 2012
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| Derivative Contracts (Textual) [Abstract] | |||
| Convertible senior notes interest rate | 3.00% | 3.00% | 3.00% |
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- Details
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- Definition
Interest rate stated in the contractual debt agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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