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Segment Reporting (Details Textual)
 12 Months Ended
Dec. 31, 2011
Segment
Feb. 28, 2011
Carrier
Dec. 31, 2007
Building
Segment Reporting (Textual) [Abstract]      
Number of LNG carriers   6 4
Number of reportable segments 2    
Minimum percentage of partnership's consolidated voyage revenues 10.00%    
Suezmax Tankers [Member]
      
Segment Reporting (Textual) [Abstract]      
Number of crude oil tankers 10    
Handymax Product tanker [Member]
      
Segment Reporting (Textual) [Abstract]      
Number of Handymax product tanker 1    
Liquefied Gas Segment [Member]
      
Segment Reporting (Textual) [Abstract]      
Number of LNG carriers 20    
Number of LNG carriers included in joint ventures accounted for under the equity method 9    
Number of LPG carriers 3    
Number of Multigas carriers 2