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Significant Accounting Policies and Recent Accounting Pronouncements, textuals 2 (Details) (USD $)
12 Months Ended
Dec. 31, 2012
Property, Plant and Equipment [Line Items]  
Property, Plant and Equipment, Estimated Useful Lives 30 years
[MinimumMember]
 
Property, Plant and Equipment [Line Items]  
Estimated Residual Scrap Value Per Lightweight Ton 200
[MaximumMember]
 
Property, Plant and Equipment [Line Items]  
Estimated Residual Scrap Value Per Lightweight Ton 350