XML 57 R44.htm IDEA: XBRL DOCUMENT
v3.19.2

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Vessels, net and Deferred revenue (Details) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2019 USD ($) | Jun. 30, 2018 USD ($) | Jun. 30, 2019 USD ($) $ / item | Jun. 30, 2018 USD ($) | Dec. 31, 2018 USD ($)
Vessels, net |  |  |  |  |
Estimated useful life |  |  | 25 years |  |
Estimated scrap value (in dollars per lightweight ton) | $ / item |  |  | 310 |  |
Depreciation and amortization | $ 18,271 | $ 16,450 | $ 36,348 | $ 33,336 |
Accrual related to estimated customer claims | 532 |  | 532 |  | $ 345
Vessels |  |  |  |  |
Vessels, net |  |  |  |  |
Depreciation and amortization | $ 16,697 | $ 15,246 | $ 33,185 | $ 30,919 |

X
- Definition Represents the accrual related to estimated customer claims. + References No definition available. + Details
Name: | gnk_AccrualRelatedToEstimatedCustomerClaims
Namespace Prefix: | gnk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Definition Represents the estimated scrap value of vessels. + References No definition available. + Details
Name: | gnk_VesselsEstimatedScrapValue
Namespace Prefix: | gnk_
Data Type: | us-types:perUnitItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the estimated useful life of vessels. + References No definition available. + Details
Name: | gnk_VesselsEstimatedUsefulLife
Namespace Prefix: | gnk_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
Name: | us-gaap_DepreciationDepletionAndAmortization
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=gnk_VesselsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |