v3.8.0.1

Investment in Term Loans (Detail) $ in Thousands | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
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

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