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Organization and Principles of Consolidation (Details)
1 Months Ended
Sep. 25, 2012
Organization, Consolidation and Presentation of Financial Statements [Line Items]  
Units sold in IPO 10,925,000
Exercise of Underwriters' Over-allotment Option [Member]
 
Organization, Consolidation and Presentation of Financial Statements [Line Items]  
Units sold in IPO 1,425,000