XML 106 R49.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Sale of Vessels (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Gain on sale of vessels |  |  |
(Loss) gain on sale of vessels | $ (168) | $ 3,513 | $ 7,712
Genco Progress, Genco Cavalier, Genco Explorer, Genco Muse, Genco Beauty and Genco Knight |  |  |
Gain on sale of vessels |  |  |
(Loss) gain on sale of vessels |  | $ 3,513 |
Genco Challenger, Genco Champion and Genco Raptor |  |  |
Gain on sale of vessels |  |  |
(Loss) gain on sale of vessels | $ (168) |  |
Genco Wisdom, Genco Reliance, Genco Carrier, Genco Success And Genco Prosperity |  |  |
Gain on sale of vessels |  |  |
(Loss) gain on sale of vessels |  |  | $ 7,712

X
- Definition Amount of gain (loss) on sale or disposal of property, plant and equipment assets, excluding oil and gas property and timber property. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109226348&loc=d3e2443-110228 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230 + Details
Name: | us-gaap_GainLossOnDispositionOfAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_GainLossOnDispositionOfAssetsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis=gnk_GencoProgressGencoCavalierGencoExplorerGencoMuseGencoBeautyAndGencoKnightMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis=gnk_GencoChallengerGencoChampionAndGencoRaptorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis=gnk_GencoWisdomGencoRelianceGencoCarrierGencoSuccessAndGencoProsperityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |