| Prepaid and Other Current Assets (Tables) | 12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Dec. 31, 2012 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Prepaid and Other Current Assets [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Summary of prepaid and other current assets | 
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- Details 
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- Definition Tabular disclosure of the amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings within one year or the normal operating cycle, if longer; the aggregate carrying amount of current assets, not separately presented elsewhere in the balance sheet; and other deferred costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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