XML 30 R57.htm IDEA: XBRL DOCUMENT
v2.4.1.9

INVESTMENTS (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended |
--- | --- | ---
Mar. 31, 2015 | Mar. 31, 2014 | Dec. 31, 2014
Schedule of Investments |  |  |
Fair value of investment in capital stock | $ 28,845 us-gaap_AvailableForSaleSecuritiesEquitySecuritiesNoncurrent |  | $ 26,486 us-gaap_AvailableForSaleSecuritiesEquitySecuritiesNoncurrent
Jinhui Shipping and Transportation Limited |  |  |
Schedule of Investments |  |  |
Investment in the capital stock (in shares) | 16,335,100 us-gaap_InvestmentOwnedBalanceShares / dei_LegalEntityAxis = gnk_JinhuiShippingAndTransportationLimitedMember |  | 16,335,100 us-gaap_InvestmentOwnedBalanceShares / dei_LegalEntityAxis = gnk_JinhuiShippingAndTransportationLimitedMember
Fair value of investment in capital stock | 28,776 us-gaap_AvailableForSaleSecuritiesEquitySecuritiesNoncurrent / dei_LegalEntityAxis = gnk_JinhuiShippingAndTransportationLimitedMember |  | 26,414 us-gaap_AvailableForSaleSecuritiesEquitySecuritiesNoncurrent / dei_LegalEntityAxis = gnk_JinhuiShippingAndTransportationLimitedMember
Impairment of investment | 0 us-gaap_ImpairmentOfInvestments / dei_LegalEntityAxis = gnk_JinhuiShippingAndTransportationLimitedMember |  |
Jinhui Shipping and Transportation Limited | Predecessor |  |  |
Schedule of Investments |  |  |
Impairment of investment |  | 0 us-gaap_ImpairmentOfInvestments / dei_LegalEntityAxis = gnk_JinhuiShippingAndTransportationLimitedMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember |
Korea Line Corporation |  |  |
Schedule of Investments |  |  |
Investment in the capital stock (in shares) | 3,355 us-gaap_InvestmentOwnedBalanceShares / dei_LegalEntityAxis = gnk_KoreaLineCorporationMember |  | 3,355 us-gaap_InvestmentOwnedBalanceShares / dei_LegalEntityAxis = gnk_KoreaLineCorporationMember
Fair value of investment in capital stock | 69 us-gaap_AvailableForSaleSecuritiesEquitySecuritiesNoncurrent / dei_LegalEntityAxis = gnk_KoreaLineCorporationMember |  | 72 us-gaap_AvailableForSaleSecuritiesEquitySecuritiesNoncurrent / dei_LegalEntityAxis = gnk_KoreaLineCorporationMember
Impairment of investment | 0 us-gaap_ImpairmentOfInvestments / dei_LegalEntityAxis = gnk_KoreaLineCorporationMember |  |
Korea Line Corporation | Predecessor |  |  |
Schedule of Investments |  |  |
Impairment of investment |  | $ 0 us-gaap_ImpairmentOfInvestments / dei_LegalEntityAxis = gnk_KoreaLineCorporationMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember |

X
- Definition Equity securities categorized neither as held-to-maturity nor trading which are intended be sold more than one year from the balance sheet date or operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26626-111562 + Details
Name: | us-gaap_AvailableForSaleSecuritiesEquitySecuritiesNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 35 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=27723805&loc=d3e25351-111560 + Details
Name: | us-gaap_ImpairmentOfInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Balance held at close of period in number of shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-12C.Column B) -URI http://asc.fasb.org/extlink&oid=34726532&loc=d3e611225-123010 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 6 -Subparagraph (SX 210.12-14.Column B) -URI http://asc.fasb.org/extlink&oid=34726532&loc=d3e611322-123010 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-12.Column B) -URI http://asc.fasb.org/extlink&oid=34726532&loc=d3e611133-123010 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12C -Paragraph Column B -Article 12 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Paragraph Column B -Article 12 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 14 -Paragraph Column B -Article 12 + Details
Name: | us-gaap_InvestmentOwnedBalanceShares
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_ScheduleOfInvestmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=gnk_JinhuiShippingAndTransportationLimitedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=gnk_KoreaLineCorporationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |