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Intangible Assets and Goodwill - Carrying Amount of Intangible Assets for Partnership's Reportable Segments (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]    
Gross carrying amount $ 186,610 $ 186,610
Accumulated amortization (107,820) (98,964)
Net carrying amount 78,790 87,646
Liquefied Gas Segment [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross carrying amount 179,813 179,813
Accumulated amortization (101,023) (92,167)
Net carrying amount 78,790 87,646
Conventional Tankers [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross carrying amount 6,797 6,797
Accumulated amortization $ (6,797) $ (6,797)