XML 65 R48.htm IDEA: XBRL DOCUMENT
v3.22.4

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Vessels, net (Details) $ / shares in Units, $ in Thousands |  | 12 Months Ended
--- | --- | ---
Jan. 01, 2022 $ / item | Dec. 31, 2022 USD ($) $ / shares $ / item | Dec. 31, 2021 USD ($) $ / item | Dec. 31, 2020 USD ($)
Vessels, net |  |  |  |
Estimated useful life |  | 25 years |  |
Depreciation and amortization | $ |  | $ 60,190 | $ 56,231 | $ 65,168
Estimated scrap value (in dollars per lightweight ton) | $ / item | 400 | 400 | 310 |
Estimated life of average scrap value of steel | 15 years |  |  |
Decrease in depreciation expense | $ |  | $ 4,647 |  |
Increase in basic net earnings per share | $ / shares |  | $ 0.11 |  |
Basic net earnings per share if no change to estimated scrap value | $ / shares |  | 3.63 |  |
Diluted net earnings per share if no change to estimated scrap value | $ / shares |  | $ 3.59 |  |
Vessels |  |  |  |
Vessels, net |  |  |  |
Depreciation and amortization | $ |  | $ 50,092 | $ 49,417 | $ 58,008

X
- Definition Represents the decrease in depreciation expense as a result of increase in estimated scrap value. + References No definition available. + Details
Name: | gnk_DecreaseInDepreciationExpenseAsResultOfIncreaseInEstimatedScrapValue
Namespace Prefix: | gnk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period, if there is no change in estimated scrap value. + References No definition available. + Details
Name: | gnk_EarningsPerShareBasicIfNoChangeInEstimatedScrapValue
Namespace Prefix: | gnk_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period, if there is no change in estimated scrap value. + References No definition available. + Details
Name: | gnk_EarningsPerShareDilutedIfNoChangeInEstimatedScrapValue
Namespace Prefix: | gnk_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the increase (decrease) in basic and diluted net income (loss) per share. + References No definition available. + Details
Name: | gnk_IncreaseDecreaseInBasicNetIncomeLossPerShare
Namespace Prefix: | gnk_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period of the average scrap value of steel. + References No definition available. + Details
Name: | gnk_UsefulLifeOfAverageScrapValueOfSteel
Namespace Prefix: | gnk_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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: | srt-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=123359005&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=123570139&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: |