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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 3) (Baltic Trading Limited) | Mar. 31, 2015 | Dec. 31, 2014
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Baltic Trading Limited |  |
Noncontrolling interest |  |
Economic interest held by noncontrolling interest (as a percent) | 89.15%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners / dei_LegalEntityAxis = gnk_BalticTradingLimitedMember | 89.15%us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners / dei_LegalEntityAxis = gnk_BalticTradingLimitedMember
Voting power (as a percent) | 35.40%gnk_MinorityInterestVotingInterestHeldByNoncontrollingOwners / dei_LegalEntityAxis = gnk_BalticTradingLimitedMember | 35.40%gnk_MinorityInterestVotingInterestHeldByNoncontrollingOwners / dei_LegalEntityAxis = gnk_BalticTradingLimitedMember

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- Definition Represents the voting interest held by noncontrolling shareholders, partners or other equity holders in consolidated entity. + References No definition available. + Details
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- Details
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Balance Type: | na
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- Definition The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
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