Commitments, Contingencies and Litigation (Tables)	12 Months Ended
Dec. 31, 2012
Commitments, Contingencies and Litigation [Abstract]
Schedule of approximate aggregate minimum future payments	Schedule of approximate aggregate minimum future payments

Tabular disclosure of the aggregate amount of payments due on known contractual obligations for the five years following the date of the latest balance sheet and the combined aggregate amount of maturities of known contractual obligations.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-K (SK)

-Number 229

-Section 303

-Paragraph a

-Subparagraph 5

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