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Equity Method Investments - BG Joint Venture - Additional Information (Detail) |  | 12 Months Ended
--- | --- | ---
Jun. 27, 2014 USD ($) Vessel m³ | Dec. 31, 2015 USD ($) Vessel | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($)
Schedule of Equity Method Investments [Line Items] |  |  |  |
Value of service obligation |  | $ 20,065,000 | $ 32,660,000 |
Ownership Percentage |  | 100.00% |  |
Drawings from long-term debt facility |  | $ 391,574,000 | 944,123,000 | $ 719,300,000
Shipbuilding supervision and crew training services [Member] | Newbuildings [Member] |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Value of service obligation |  | 29,700,000 | 33,700,000 |
Shipbuilding supervision and crew training services [Member] | Newbuildings [Member] | Fair Value Asset (Liability) [Member] |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Value of service obligation | $ 33,300,000 |  |  |
BG Joint Venture [Member] |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Fully built-up cost |  | 1,000,000,000 |  |
Difference between carrying amount and book value | $ 16,800,000 |  |  |
Drawings from long-term debt facility |  | 89,000,000 | 53,700,000 |
Debt facility used to finance a portion of estimated fully built-up cost |  | 787,000,000 |  |
Capital contributions received from the Partnership |  | $ 8,600,000 | 3,800,000 |
BG Joint Venture [Member] | Shipbuilding supervision and crew training services [Member] | Newbuildings [Member] |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Number of vessels | Vessel | 4 | 4 |  |
Volume of vessels | m³ | 174,000 |  |  |
Fully built-up cost | $ 1,000,000,000 |  |  |
Operating lease arrangement period, lessor |  | 20 years |  |
Value of service obligation | 38,700,000 |  |  |
Amounts Due |  | $ 16,500,000 | 17,100,000 |
BG Joint Venture [Member] | Shipbuilding supervision and crew training services [Member] | Newbuildings [Member] | Principal Amount [Member] |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Amounts Due | 20,300,000 |  | $ 20,300,000 |
BG Joint Venture [Member] | Shipbuilding supervision and crew training services [Member] | Newbuildings [Member] | Fair Value Asset (Liability) [Member] |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Amounts Due | $ 16,500,000 |  |  |
BG Joint Venture [Member] | Shipbuilding supervision and crew training services [Member] | 30% Ownership [Member] | Newbuildings [Member] |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Number of vessels | Vessel | 2 |  |  |
Ownership Percentage | 30.00% |  |  |
BG Joint Venture [Member] | Shipbuilding supervision and crew training services [Member] | 20% Ownership [Member] | Newbuildings [Member] |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Number of vessels | Vessel | 2 |  |  |
Ownership Percentage | 20.00% |  |  |

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