Commitments and Contingencies - Additional Information - Banff (Detail)	1 Months Ended
May. 31, 2015 USD ($)
Loss Contingencies [Line Items]
Commercial settlement agreement with the charterer amount	$ 55,000,000
Insurance Claims [Member]
Loss Contingencies [Line Items]
Recovery from deductible insurance coverage	$ 0

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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