XML 111 R98.htm IDEA: XBRL DOCUMENT v3.3.1.900

STOCK-BASED COMPENSATION (Details)																6 Months Ended			12 Months Ended
	Feb. 17, 2016 item shares	Jul. 29, 2015 shares	Jul. 17, 2015 shares	Jul. 13, 2015 shares	Dec. 18, 2014 shares	Aug. 07, 2014 USD ($) $ / shares shares	Aug. 06, 2014 shares	Jul. 10, 2014 $ / shares shares	Apr. 09, 2014 shares	Dec. 19, 2013 shares	May. 16, 2013 shares	Dec. 13, 2012 shares	Nov. 07, 2012 shares	May. 17, 2012 shares	Mar. 03, 2010 item shares	Dec. 31, 2015 USD ($) $ / shares shares	Dec. 31, 2014 USD ($) $ / shares shares	Jul. 09, 2014 USD ($) $ / shares shares	Dec. 31, 2015 USD ($) item $ / shares shares	Dec. 31, 2014 $ / shares shares	Dec. 31, 2013 USD ($) $ / shares shares	Mar. 13, 2014 shares	Jul. 12, 2005 shares
Number of Shares
Balance at the end of the period (in shares)																798,615			798,615
Number of resignations from the Board of Directors | item	2
Peter C. Georgiopoulos, Chairman of Board | Baltic Trading
Number of Shares
Granted (in shares)					700,000
Restricted Stock Units | Directors
Number of Shares
Granted (in shares)		58,215		16,188															74,403
Vested/Exercisable (in shares)	(23,286)		(16,188)													0			(16,188)
Balance at the end of the period (in shares)																58,215			58,215
Number of common shares outstanding in respect of RSUs																			0
Weighted Average Exercise price
Weighted-average remaining contractual life																			4 months 13 days
Weighted Average Grant Date Price
Granted (in dollars per share) | $ / shares																			$ 7.11
Vested/Exercisable (in dollars per share) | $ / shares																			7.00
Balance at the end of the period (in dollars per share) | $ / shares																$ 7.15			$ 7.15
Additional disclosures
Total fair value of shares vested | $																			$ 116,000
Unrecognized compensation cost related to nonvested stock awards
Unrecognized compensation cost | $																$ 193,000			$ 193,000
Weighted-average period for recognition of unrecognized compensation cost																			4 months 13 days
Predecessor
Number of Shares
Forfeited (in shares)																					(21,500)
Predecessor | Peter C. Georgiopoulos, Chairman of Board | Baltic Trading
Number of Shares
Granted (in shares)										539,000
Predecessor | Directors | Baltic Trading
Number of Shares
Granted (in shares)									36,345		59,680
2005 and 2012 GS&T Plans | Predecessor
Number of Shares
Balance at the beginning of the period (in shares)																		880,465		880,465	1,108,762
Granted (in shares)																					200,634
Vested/Exercisable (in shares)																		(880,465)			(407,431)
Forfeited (in shares)																					(21,500)
Balance at the end of the period (in shares)																					880,465
Weighted Average Grant Date Price
Balance at the beginning of the period (in dollars per share) | $ / shares																		$ 7.77		$ 7.77	$ 9.47
Granted (in dollars per share) | $ / shares																					1.57
Vested/Exercisable (in dollars per share) | $ / shares																		$ 7.77			9.46
Forfeited (in dollars per share) | $ / shares																					5.53
Balance at the end of the period (in dollars per share) | $ / shares																					$ 7.77
Additional disclosures
Total fair value of shares vested | $																		$ 691,000			$ 943,000
Unrecognized compensation cost related to nonvested stock awards
Number of anniversaries in which award vests																			4 years
2005 and 2012 GS&T Plans | Predecessor | Peter C. Georgiopoulos, Chairman of Board
Number of Shares
Granted (in shares)												100,000
Unrecognized compensation cost related to nonvested stock awards
Number of anniversaries in which award vests, which are not granted as part of grants to all directors																			10 years
2005 and 2012 GS&T Plans | Predecessor | Directors
Number of Shares
Granted (in shares)												52,500	2,500	15,000
2005 GS&T Plan | Predecessor
Unrecognized compensation cost related to nonvested stock awards
Aggregate number of shares of common stock available for awards																							2,000,000
2012 GS&T Plan | Predecessor
Unrecognized compensation cost related to nonvested stock awards
Aggregate number of shares of common stock available for awards														3,000,000
2012 GS&T Plan | Predecessor | Directors
Number of Shares
Granted (in shares)											200,634
2014 MIP Plan
Number of Shares
Balance at the beginning of the period (in shares)																			1,110,600
Granted (in shares)																	1,110,600
Vested/Exercisable (in shares)																			(370,200)
Balance at the end of the period (in shares)																740,400	1,110,600		740,400	1,110,600
Weighted Average Grant Date Price
Balance at the beginning of the period (in dollars per share) | $ / shares																			$ 20.00
Granted (in dollars per share) | $ / shares																	$ 20.00
Vested/Exercisable (in dollars per share) | $ / shares																			20.00
Balance at the end of the period (in dollars per share) | $ / shares																$ 20.00	$ 20.00		$ 20.00	$ 20.00
Additional disclosures
Total fair value of shares vested | $																	$ 0		$ 2,662,000
Unrecognized compensation cost related to nonvested stock awards
Unrecognized compensation cost | $																$ 6,163,000			$ 6,163,000
Weighted-average period for recognition of unrecognized compensation cost																			1 year 7 months 6 days
Aggregate number of shares of common stock available for awards							250,000,000	9,668,061
Percentage of common stock outstanding ( In percent)								1.80%
2014 MIP Plan | MIP Warrants
Number of Shares
Balance at the beginning of the period (in shares)								8,557,461									8,557,461		8,557,461
Vested/Exercisable (in shares)																			(2,852,487)
Balance at the end of the period (in shares)																5,704,974	8,557,461	8,557,461	5,704,974	8,557,461
Weighted Average Exercise price
Outstanding at the beginning of the period (in dollars per share) | $ / shares								$ 30.31									$ 30.31		$ 30.31
Exercisable (in dollars per share) | $ / shares																			30.31
Outstanding at the end of the period (in dollars per share) | $ / shares																$ 30.31	30.31	$ 30.31	$ 30.31	$ 30.31
Weighted-average remaining contractual life																			4 years 7 months 6 days
Weighted Average Grant Date Price
Balance at the beginning of the period (in dollars per share) | $ / shares								$ 6.36									6.36		$ 6.36
Vested/Exercisable (in dollars per share) | $ / shares																			6.36
Balance at the end of the period (in dollars per share) | $ / shares																$ 6.36	$ 6.36	$ 6.36	$ 6.36	$ 6.36
Weighted average remaining contractual life, exercisable																			4 years 7 months 6 days
Additional disclosures
Total fair value of outstanding awards upon emergence from bankruptcy | $						$ 54,436,000
Unrecognized compensation cost related to nonvested stock awards
Unrecognized compensation cost | $																$ 15,105,000			$ 15,105,000
Number of anniversaries in which award vests							3 years
Volatility rate ( as a percent)						43.91%
Volatility rate term						6 years
Risk-free interest rate ( as a percent)						1.85%
Dividend rate ( as a percent)						0.00%
Percentage of warrant vest for anniversaries of the grant date						33.33%
Amortization
2016 | $																11,496,000			11,496,000
2017 | $																$ 3,609,000			$ 3,609,000
2014 MIP Plan | MIP Warrants | $25.91 Warrants
Unrecognized compensation cost related to nonvested stock awards
Aggregate number of shares of common stock available for awards						2,380,664
Strike price (in dollars per share) | $ / shares						$ 25.91
Fair value of warrant (in dollars per share) | $ / shares						$ 7.22
2014 MIP Plan | MIP Warrants | $28.73 Warrants
Unrecognized compensation cost related to nonvested stock awards
Aggregate number of shares of common stock available for awards						2,467,009
Strike price (in dollars per share) | $ / shares						$ 28.73
Fair value of warrant (in dollars per share) | $ / shares						$ 6.63
2014 MIP Plan | MIP Warrants | $34.19 Warrants
Unrecognized compensation cost related to nonvested stock awards
Aggregate number of shares of common stock available for awards						3,709,788
Strike price (in dollars per share) | $ / shares						$ 34.19
Fair value of warrant (in dollars per share) | $ / shares						$ 5.63
Baltic Trading Plan | Baltic Trading
Number of Shares
Balance at the beginning of the period (in shares)																			1,941,844
Granted (in shares)																				1,086,345
Vested/Exercisable (in shares)			(1,941,844)																(1,941,844)	(525,930)
Balance at the end of the period (in shares)																	1,941,844			1,941,844
Weighted Average Grant Date Price
Balance at the beginning of the period (in dollars per share) | $ / shares																			$ 3.80
Granted (in dollars per share) | $ / shares																				$ 2.61
Vested/Exercisable (in dollars per share) | $ / shares																			$ 3.80	7.21
Balance at the end of the period (in dollars per share) | $ / shares																	$ 3.80			$ 3.80
Additional disclosures
Total fair value of shares vested | $																	$ 1,168,000		$ 2,913,000
Amortization
Number of anniversaries in which award vests in connection with IPO | item															4
Number of anniversaries in which award vests not in connection with IPO | item																			4
Baltic Trading Plan | Predecessor | Baltic Trading
Number of Shares
Balance at the beginning of the period (in shares)																		1,381,429		1,381,429	664,249
Granted (in shares)																					998,680
Vested/Exercisable (in shares)																					(281,500)
Balance at the end of the period (in shares)																					1,381,429
Weighted Average Grant Date Price
Balance at the beginning of the period (in dollars per share) | $ / shares																		$ 6.03		$ 6.03	$ 7.70
Granted (in dollars per share) | $ / shares																					5.60
Vested/Exercisable (in dollars per share) | $ / shares																					8.48
Balance at the end of the period (in dollars per share) | $ / shares																					$ 6.03
Additional disclosures
Total fair value of shares vested | $																		$ 1,143,000			$ 1,194,000
Unrecognized compensation cost related to nonvested stock awards
Aggregate number of shares of common stock available for awards															2,000,000							6,000,000

X

- Definition

This element represents the fair value of each warrant upon emergence from bankruptcy.

+ References

No definition available.

+ Details

Name:	gnk_FairValueOfWarrant
Namespace Prefix:	gnk_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the number of members who resigned from the Company's Board of Directors.

+ References

No definition available.

+ Details

Name:	gnk_NumberOfResignationsOnCompanysBoardOfDirectors
Namespace Prefix:	gnk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the percentage of Shares of post emergence common stock outstanding as of the Effective Date on a fully-diluted basis under 2014 Management Incentive Plan

+ References

No definition available.

+ Details

Name:	gnk_PercentageOfSharesInPostEmergenceCommonStockOutstanding
Namespace Prefix:	gnk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the number of common stock currently outstanding in respect of RSUs.

+ References

No definition available.

+ Details

Name:	gnk_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCommonStockOutstanding
Namespace Prefix:	gnk_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The weighted average exercise price at grant date for nonvested equity-based awards exercisable during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

No definition available.

+ Details

Name:	gnk_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisableNumberWeightedAverageGrantDateExercisePrice
Namespace Prefix:	gnk_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Weighted average remaining contractual term for exercisable equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	gnk_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisableNumberWeightedAverageRemainingContractualTerms
Namespace Prefix:	gnk_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The weighted average exercise price of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

+ References

No definition available.

+ Details

Name:	gnk_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateExercisePrice
Namespace Prefix:	gnk_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Fair value of share-based awards outstanding other than options.

+ References

No definition available.

+ Details

Name:	gnk_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingTotalFairValue
Namespace Prefix:	gnk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Represents the number of anniversaries in which award vests, which are not granted as part of grants made to all directors.

+ References

No definition available.

+ Details

Name:	gnk_ShareBasedCompensationArrangementByShareBasedPaymentAwardNotGrantedAsPartOfGrantsVestingInNumberOfAnniversaries
Namespace Prefix:	gnk_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the number of anniversaries in which award vests which are granted in connection with Baltic Trading's IPO.

+ References

No definition available.

+ Details

Name:	gnk_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingInConnectionWithIPOInNumberOfAnniversaries
Namespace Prefix:	gnk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the number of anniversaries in which award vests.

+ References

No definition available.

+ Details

Name:	gnk_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingInNumberOfAnniversaries
Namespace Prefix:	gnk_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the number of anniversaries in which award vests that is not in connection with the entity's IPO.

+ References

No definition available.

+ Details

Name:	gnk_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingNotInConnectionWithIPOInNumberOfAnniversaries
Namespace Prefix:	gnk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_DepreciationAndAmortizationAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

+ References

No definition available.

+ Details

Name:	us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Exercise or strike price stated in the contract for options indexed to the issuer's equity shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 480
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(1)
-URI http://asc.fasb.org/extlink&oid=6940734&loc=d3e22047-110879

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 40
-Section 50
-Paragraph 5
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=6445032&loc=d3e90205-114008

+ Details

Name:	us-gaap_OptionIndexedToIssuersEquityStrikePrice1
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalDisclosuresAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(3)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(3)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (e)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(2)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)(2)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(2)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(iii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(ii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(iv)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Percentage of vesting of share-based compensation awards.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 14.D.2)
-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 14
-Section D
-Subsection 2

+ Details

Name:	us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_TitleOfIndividualAxis=us-gaap_BoardOfDirectorsChairmanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	dei_LegalEntityAxis=gnk_BalticTradingLimitedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_TitleOfIndividualAxis=us-gaap_DirectorMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementScenarioAxis=us-gaap_PredecessorMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PlanNameAxis=gnk_GencoShippingAndTradingLimited2005And2012EquityIncentivePlansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PlanNameAxis=gnk_GencoShippingAndTradingLimited2005EquityIncentivePlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PlanNameAxis=gnk_GencoShippingAndTradingLimited2012EquityIncentivePlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PlanNameAxis=gnk_GencoShippingAndTradingLimited2014ManagementIncentivePlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=gnk_ManagementIncentivePlanWarrantsIssueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_AwardTypeAxis=gnk_MIPWarrantsTierOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_AwardTypeAxis=gnk_MIPWarrantsTierTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_AwardTypeAxis=gnk_MIPWarrantsTierThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PlanNameAxis=gnk_BalticTradingPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: