The interest rate for investments that have an interest rate. For fixed rate investments, this indicates the fixed interest rate. If the investment has a variable interest rate, the rate stated here may be the rate that is currently relevant. In this case the "Investment, Interest Rate is Current Rate for Variable Rate Investment Flag", "Investment, Interest Rate is Discount Rate at Purchase Flag", "Investment, Interest Rate Reflects Current Yield Flag" should be used. If one of these flags are not appropriate to explain the interest rate that is indicated, then a new flag should be added or an explanation should be included in "Investment, Additional Information".

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 12
-Sentence Column A

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- Definition

Fixed interest rate on investment on term loans.

+ References

No definition available.

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- Definition

Number Of Subsidiaries Sold

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- Definition

Number Of Term Loan Investments

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No definition available.

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- Definition

Number Of Vessels Held As Collateral

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No definition available.

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The number of vessels sold during the period.

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No definition available.

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- Definition

Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.8)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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An amount representing an agreement for an unconditional promise by the maker to pay the Company (holder) a definite sum of money within one year from the balance sheet date (or the normal operating cycle, whichever is longer), net of any write-downs taken for collection uncertainty on the part of the holder. Such amount may include accrued interest receivable in accordance with the terms of the debt. The debt also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. This amount does not include amounts related to receivables held-for-sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4531-111522

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.3)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=82887183&loc=d3e6676-107765

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- Definition

The net amount paid or received by the reporting entity associated with purchase (sale or collection) of loans receivable arising from the financing of goods and services.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3095-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 9
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3098-108585

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- Definition

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.

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No definition available.

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Investment in Term Loans (Detail) $ in Thousands	1 Months Ended		12 Months Ended
Investment in Term Loans (Detail) $ in Thousands	May 31, 2014 subsidiary vessel	Jul. 31, 2010 USD ($) vessel term_loan	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($) subsidiary	Mar. 21, 2014 USD ($)
Net Investment Income [Line Items]
Number of term loans invested \| term_loan		2
Total amount of the term loan including costs of acquisition \| $		$ 115,600	$ 0	$ 0	$ (1,179)
Number of 2010-built VLCCs collateralized for loans \| vessel		2
Interest rate on term loan		9.00%
Investment yield		10.00%
Tanker Investments Ltd [Member]
Net Investment Income [Line Items]
Number of subsidiaries sold \| subsidiary	2				2
Tanker Investments Ltd [Member] \| Subsidiary One [Member]
Net Investment Income [Line Items]
Number of vessels sold \| vessel	1
Tanker Investments Ltd [Member] \| Subsidiary Two [Member]
Net Investment Income [Line Items]
Number of vessels sold \| vessel	1
Fair Value Asset/(Liability) [Member] \| Collateral [Member]
Net Investment Income [Line Items]
Term loan, collateral amount \| $						$ 144,000
Accrued Interest \| $						$ 9,100