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DEBT (Details 2)																					1 Months Ended						3 Months Ended	6 Months Ended			12 Months Ended
	Mar. 11, 2016 USD ($)	Feb. 10, 2016 USD ($)	Jan. 11, 2016 USD ($)	Nov. 10, 2015 USD ($)	Nov. 04, 2015 USD ($) subsidiary	Aug. 03, 2015 USD ($)	Apr. 30, 2015 USD ($)	Dec. 31, 2014 USD ($) item	Jul. 09, 2014 USD ($) item	Apr. 01, 2014	Sep. 04, 2013 USD ($)	Aug. 30, 2013 USD ($)	Aug. 31, 2012 USD ($) facility	Aug. 01, 2012 USD ($)	Feb. 28, 2012 facility shares	Dec. 21, 2011 USD ($)	Aug. 20, 2010 USD ($) tranche item	Aug. 12, 2010 USD ($) tranche item	Jan. 26, 2009 USD ($)	Jul. 20, 2007 USD ($) facility item	Feb. 29, 2016	Dec. 31, 2015 USD ($) item	Oct. 31, 2015 item	Aug. 31, 2015 item	Jul. 31, 2015 USD ($) item	Aug. 31, 2012 USD ($) facility	Sep. 30, 2007	Jun. 30, 2015	Dec. 31, 2014 USD ($) item shares	Jul. 09, 2014 USD ($) item	Dec. 31, 2015 USD ($) item shares	Dec. 31, 2013 USD ($) item	Jul. 14, 2015 USD ($)	Sep. 30, 2010 item	Jul. 27, 2010	Jul. 07, 2007	Feb. 20, 2007 facility
Line of Credit Facility
Number of vessels in the fleet | item								67														70							67		70	66
Issuance of common stock (in shares) | shares																													131,017		11,287,132
Debt classified as current liability								$ 34,324,000														$ 588,434,000							$ 34,324,000		$ 588,434,000
Amended and Restated Credit Facility
Line of Credit Facility
Reduction in the minimum consolidated net worth ratio																																	$ 30,730,000
Condensed net worth to be maintained																																	270,150,000
Secured Debt | $22 Million Term Loan Facility
Line of Credit Facility
Maximum borrowing capacity								22,000,000														$ 22,000,000							22,000,000		$ 22,000,000		$ 22,000,000
Collateral security maintenance test (as a percent)																						110.00%									110.00%		110.00%
Remaining borrowing capacity																						$ 0									$ 0
Long-term Debt								20,125,000														18,625,000							20,125,000		18,625,000
Debt classified as current liability																						18,625,000									$ 18,625,000
Maintained Aggregate fair market value of the mortgaged vessels as a percentage of aggregate outstanding principal amount (as a percent)																															108.70%
Remedy period available to post additional collateral or reduce the amount of the revolving loans and/or letters of credit outstanding																															30 days
Prepayment of the outstanding indebtedness		$ 220,000
Repayment of the outstanding debt
2016																						1,500,000									$ 1,500,000
2017																						1,500,000									1,500,000
2018																						1,500,000									1,500,000
2019																						14,125,000									14,125,000
Long-term Line of Credit, Total																						18,625,000									18,625,000
Secured Debt | 2014 Term Loan Facilities
Line of Credit Facility
Long-term Debt								33,150,000														31,069,000							33,150,000		31,069,000
Secured Debt | Baltic Trading $33 Million Term Loan Facility
Line of Credit Facility
Maximum borrowing capacity								33,000,000																					33,000,000
Long-term Debt								0														32,725,000							0		32,725,000
Repayment of the outstanding debt
2016																						2,200,000									2,200,000
2017																						2,200,000									2,200,000
2018																						2,200,000									2,200,000
2019																						26,125,000									26,125,000
Long-term Line of Credit, Total																						32,725,000									32,725,000
Secured Debt | Baltic Trading $33 Million Term Loan Facility | Baltic Scorpion
Line of Credit Facility
Collateral security maintenance test (as a percent)						140.00%
Drawdowns during the period						$ 16,500,000
Secured Debt | $100 Million and $253 Million Term Loan Facilities
Line of Credit Facility
Maximum total debt outstanding to value adjusted total assets ratio							70
Maximum percentage of liquidity covenant amended							50.00%
Minimum cash required to be maintained by each collateralized vessel							$ 750,000
Minimum period of available working capital lines							6 months
Secured Debt | $100 Million and $253 Million Term Loan Facilities | LIBOR
Line of Credit Facility
Applicable margin over reference rate (as a percent)									3.50%
Secured Debt | $100 Million Term Loan Facility
Line of Credit Facility
Maximum borrowing capacity								100,000,000														100,000,000							100,000,000		100,000,000
Collateral security maintenance test (as a percent)																					130.00%
Long-term Debt								67,792,000														60,100,000							67,792,000		60,100,000
Debt classified as current liability																						60,100,000									60,100,000
Payment of upfront fees							$ 165,000
Maintained Aggregate fair market value of the mortgaged vessels as a percentage of aggregate outstanding principal amount (as a percent)																					110.00%
Remedy period available to post additional collateral or reduce the amount of the revolving loans and/or letters of credit outstanding																					30 days
Number of unencumbered vessels adding as additional collateral to cover the shortfall of fair value | item																							2
Repayment of the outstanding debt
2016																						7,692,000									7,692,000
2017																						7,692,000									7,692,000
2018																						7,692,000									7,692,000
2019																						37,024,000									37,024,000
Long-term Line of Credit, Total																						60,100,000									60,100,000
Secured Debt | $253 Million Term Loan Facility
Line of Credit Facility
Maximum borrowing capacity								253,000,000														253,000,000							253,000,000		253,000,000
Collateral security maintenance test (as a percent)																												135.00%
Drawdowns during the period																															253,000,000
Long-term Debt								165,568,000														145,268,000							165,568,000		145,268,000
Debt classified as current liability																						145,268,000									$ 145,268,000
Paydown of debt																									$ 5,075,000
Payment of upfront fees							$ 350,000
Maintained Aggregate fair market value of the mortgaged vessels as a percentage of aggregate outstanding principal amount (as a percent)			117.50%																									113.40%
Remedy period available to post additional collateral or reduce the amount of the revolving loans and/or letters of credit outstanding																															30 days
Number of unencumbered vessels adding as additional collateral to cover the shortfall of fair value | item																									5
Restricted cash								9,750,000														9,750,000							9,750,000		$ 9,750,000
Prepayment of the outstanding indebtedness																									$ 1,650,000
Scheduled amortization payment to be reduced by prepayment			$ 5,075,000
Repayment of the outstanding debt
2016																						20,300,000									20,300,000
2017																						20,300,000									20,300,000
2018																						20,300,000									20,300,000
2019																						84,368,000									84,368,000
Long-term Line of Credit, Total																						145,268,000									145,268,000
Line of Credit facility | $148 Million Credit Facility
Line of Credit Facility
Maximum borrowing capacity								$ 148,000,000														$ 148,000,000							$ 148,000,000		$ 148,000,000		$ 148,000,000
Collateral security maintenance test (as a percent)																						140.00%									140.00%
Minimum cash balance required per vessel owned																																	$ 750,000
Payment of Credit Facility																															$ 7,616,000
Drawdowns during the period																															148,000,000
Remaining borrowing capacity																						$ 0									0
Long-term Debt																						140,383,000									140,383,000
Debt classified as current liability																						$ 140,383,000									$ 140,383,000
Commitment fee on unused daily average unutilized commitment (as a percent)								1.20%
Number of vessels mortgaged | item								9																					9
Maintained Aggregate fair market value of the mortgaged vessels as a percentage of aggregate outstanding principal amount (as a percent)																															105.00%
Remedy period available to post additional collateral or reduce the amount of the revolving loans and/or letters of credit outstanding																															60 days
Number of unencumbered vessels adding as additional collateral to cover the shortfall of fair value | item																						2		2
Line of Credit facility | $148 Million Credit Facility | LIBOR
Line of Credit Facility
Reference rate for interest payable								LIBOR
Applicable margin over reference rate (as a percent)								3.00%
Line of Credit facility | 2007 Credit Facility
Line of Credit Facility
Final payment amount																			$ 381,182,000
Consolidated leverage ratio																																				5.5
Line of Credit facility | 2007 Credit Facility | Minimum
Line of Credit Facility
Ratio of EBITDA to interest expense																				2
Line of Credit facility | $98 Million Credit Facility
Line of Credit Facility
Maximum borrowing capacity					$ 98,000,000																	$ 98,000,000									$ 98,000,000
Number of wholly owned subsidiaries | subsidiary					13
Drawdowns during the period				$ 98,271,000																											98,271,000
Remaining borrowing capacity																						0									0
Long-term Debt								$ 0														98,271,000							$ 0		98,271,000
Debt classified as current liability																						98,271,000									98,271,000
Period without fixed amortization schedule					2 years
Amount of periodic payment					$ 2,500,000
Maximum collateral required for prepayment of loan (as a percent)					182.00%
Number of collateral vessels					$ 13
Restricted cash								$ 0														9,750,000							$ 0		9,750,000
Repayment of the outstanding debt
2017																						1,413,000									1,413,000
2018																						10,000,000									10,000,000
2019																						10,000,000									10,000,000
2020																						76,858,000									76,858,000
Long-term Line of Credit, Total																						98,271,000									98,271,000
Line of Credit facility | $98 Million Credit Facility | LIBOR
Line of Credit Facility
Reference rate for interest payable					three-month LIBOR
Applicable margin over reference rate (as a percent)					6.125%
Predecessor | 2007 Credit Facility
Line of Credit Facility
Number of days after year end audited financial statements are to be furnished to lenders										90 days
Predecessor | 2010 Notes
Line of Credit Facility
Interest rate on convertible notes (as a percent)																																			5.00%
Number of days after notice from trustee to cure default										30 days
Predecessor | Secured Debt | $22 Million Term Loan Facility
Line of Credit Facility
Maximum borrowing capacity												$ 22,000,000										22,000,000									22,000,000
Final payment amount												13,375,000
Proceeds from issuance of secured debt																																$ 22,000,000
Amount of periodic payment												$ 375,000
Commitment fee on unused daily average unutilized commitment (as a percent)												1.00%
Consolidated net worth threshold, base amount												$ 786,360,000
Consolidated net worth threshold, percentage of the value of any subsequent primary equity offerings (as a percent)												50.00%
Predecessor | Secured Debt | $22 Million Term Loan Facility | LIBOR
Line of Credit Facility
Reference rate for interest payable												three-month LIBOR
Applicable margin over reference rate (as a percent)												3.35%
Predecessor | Secured Debt | $22 Million Term Loan Facility | Baltic Hare
Line of Credit Facility
Proceeds from issuance of secured debt											$ 10,730,000
Predecessor | Secured Debt | $22 Million Term Loan Facility | Baltic Fox
Line of Credit Facility
Proceeds from issuance of secured debt											$ 11,270,000
Predecessor | Secured Debt | $100 Million and $253 Million Term Loan Facilities
Line of Credit Facility
Minimum cash balance required per vessel owned									$ 750,000																					$ 750,000
Predecessor | Secured Debt | $100 Million and $253 Million Term Loan Facilities | LIBOR
Line of Credit Facility
Applicable margin over reference rate for interest payable, before increase (as a percent)									3.00%																					3.00%
Predecessor | Secured Debt | $100 Million Term Loan Facility
Line of Credit Facility
Maximum borrowing capacity																		$ 100,000,000
Drawdowns during the period																		$ 20,000,000
Reference rate for interest payable																		Three-month LIBOR
Applicable margin over reference rate (as a percent)																		3.00%
Number of vessels acquired | item																		5
Number of drawdowns | tranche																		5
Number of drawdowns per vessel | tranche																		1
Maturity term from the date of the first drawdown																		7 years
Commitment fee on unused daily average unutilized commitment (as a percent)																		1.35%
Profile for Amortization Period																		13 years
Paydown of debt									$ 1,923,000
Number of vessels owned by each of the entity's wholly-owned ship-owning subsidiaries who act as guarantors | item																		1
Predecessor | Secured Debt | $100 Million Term Loan Facility | Minimum
Line of Credit Facility
Reference rate for interest payable																		One-month LIBOR
Predecessor | Secured Debt | $100 Million Term Loan Facility | Maximum
Line of Credit Facility
Reference rate for interest payable																		Six-month LIBOR
Predecessor | Secured Debt | $253 Million Term Loan Facility
Line of Credit Facility
Maximum borrowing capacity																	$ 253,000,000					253,000,000									253,000,000
Number of vessels acquired | item																	13
Number of drawdowns | tranche																	13
Number of drawdowns per vessel | tranche																	1
Commitment fee on unused daily average unutilized commitment (as a percent)																	1.25%
Paydown of debt									$ 5,075,000
Number of vessels owned by each of the entity's wholly-owned ship-owning subsidiaries who act as guarantors | item																	1
Number of vessels delivered pursuant to the agreement | item																																		12
Predecessor | Secured Debt | $253 Million Term Loan Facility | LIBOR
Line of Credit Facility
Applicable margin over reference rate for interest payable, before increase (as a percent)																	3.00%
Predecessor | Line of Credit facility | Short-Term Line
Line of Credit Facility
Payment of Credit Facility																				$ 77,000,000
Predecessor | Line of Credit facility | Standby letters of credit
Line of Credit Facility
Maximum borrowing capacity																				50,000,000
Predecessor | Line of Credit facility | 2005 Credit Facility
Line of Credit Facility
Payment of Credit Facility																				$ 206,233,000
Predecessor | Line of Credit facility | 2007 Credit Facility
Line of Credit Facility
Number of credit facilities terminated | facility																				2																	2
Minimum cash balances necessary to repay credit facility on a quarterly basis commencing September 30, 2012														$ 100,000,000
Percentage of repayments commencing September 30, 2012 to be allocated to the final payment at maturity (as a percent)													25.00%
Percentage of repayments commencing September 30, 2012 to be allocated to the scheduled mandatory principal repayments (as a percent)													75.00%
Facility fee (as a percent)									1.00%
Prepayment fee (as a percent)																										1.25%
Long-term interest payable														13,199,000
Reference rate for interest payable																				Three-month LIBOR
Applicable margin over reference rate for interest payable, before increase (as a percent)																				0.85%
Commitment fee on unused daily average unutilized commitment (as a percent)																			0.70%	0.20%							0.25%
Maximum percentage of en bloc purchase price which may be financed by loans (as a percent)																														100.00%
Purchase price									$ 1,111,000,000																					$ 1,111,000,000
Number of vessels mortgaged | item									35																					35
Period collateral was pledged prior to effective date of Credit Facility																											30 days
Minimum cash balance required per vessel mortgaged, before increase														500,000
Minimum cash required to be maintained by each collateralized vessel														$ 750,000
Remedy period available to post additional collateral or reduce the amount of the revolving loans and/or letters of credit outstanding																											30 days
Predecessor | Line of Credit facility | 2007 Credit Facility | Period from March 31, 2009 through March 31, 2012
Line of Credit Facility
Reduction in maximum borrowing capacity																			$ 12,500,000
Predecessor | Line of Credit facility | 2007 Credit Facility | Period from June 30, 2012 through July 20, 2017
Line of Credit Facility
Reduction in maximum borrowing capacity																			$ 48,195,000
Predecessor | Line of Credit facility | 2007 Credit Facility | Subsidiary guarantors
Line of Credit Facility
Number of vessels in the fleet | item																				9
Predecessor | Line of Credit facility | 2007 Credit Facility | Minimum
Line of Credit Facility
Collateral security maintenance test (as a percent)																				130.00%
Appraised value of certain mortgaged vessels as percentage of the aggregate principal amount for ceasing of mandatory payment obligations (as a percent)														100.00%
Capacity of vessels | item																				25,000
Reference rate for interest payable																				One-month LIBOR
Consolidated net worth threshold, base amount																				$ 263,300,000
Consolidated net worth threshold, percentage of the value of any subsequent primary equity offerings (as a percent)																				80.00%
Consolidated net worth based on equity offerings completed																				$ 674,555,000
Predecessor | Line of Credit facility | 2007 Credit Facility | Maximum
Line of Credit Facility
Capacity of vessels | item																				180,000
Age of drybulk carriers at the time of delivery																				10 years
Age of drybulk carriers at the time of maturity of the credit facility																				18 years
Reference rate for interest payable																				Six-month LIBOR
Available working capital borrowings																				$ 50,000
Predecessor | Line of Credit facility | $100 Million Term Loan Facility
Line of Credit Facility
Maximum borrowing capacity																						$ 100,000,000									$ 100,000,000
Payment of Credit Facility																$ 3,000,000										$ 11,538,000
Predecessor | Line of Credit facility | $253 Million Term Loan Facility
Line of Credit Facility
Maximum borrowing capacity														$ 253,000,000		253,000,000
Payment of Credit Facility																7,000,000										$ 30,450,000
Predecessor | Line of Credit facility | August 2012 Credit Facility Agreements
Line of Credit Facility
Maximum borrowing capacity														$ 100,000,000
Number of credit facilities with prepaid scheduled amortization payments | facility																										2
Aggregate principal amount to be paid													$ 55,193,000													$ 55,193,000
Number of credit facilities that will not increase the amount of principal indebtedness outstanding or change their maturity dates | facility													3
Number of credit facilities with vessels pledged being granted a second priority security interest | facility													2
Number of credit facilities in which the consenting lenders received an upfront fee | facility													3
Percentage of upfront fee received by consenting lenders (as a percent)													0.25%
Payment of Credit Facility																										$ 57,893,000
Ratio of interest-bearing indebtedness to the sum of interest-bearing indebtedness and consolidated net worth (as a percent)													62.50%													62.50%
Predecessor | Line of Credit facility | August 2012 Credit Facility Agreements | LIBOR
Line of Credit Facility
Applicable margin over reference rate for interest payable, before increase (as a percent)														2.00%
Applicable margin over reference rate (as a percent)														3.00%
Predecessor | Line of Credit facility | August 2012 Credit Facility Agreements | Maximum
Line of Credit Facility
Percentage of indebtedness allowed to be incurred for vessel acquisitions as percentage of the lesser of the vessel acquisition cost or fair market value (as a percent)													60.00%
Predecessor | Line of Credit facility | December 2011 Credit Facility Agreements
Line of Credit Facility
Maximum borrowing capacity																$ 100,000,000
Percentage of upfront fee received by consenting lenders (as a percent)																0.25%
Payment of Credit Facility																$ 52,500,000
Facility fee (as a percent)																2.00%
Reduction in facility fee if equity offering results in desired gross proceeds (as a percent)															1.00%
Issuance of common stock (in shares) | shares															7,500,000
Ratio of interest-bearing indebtedness to the sum of interest-bearing indebtedness and consolidated net worth (as a percent)																62.50%
Number of credit facilities not subject to facility fee | facility															2
Period from June 30, 2015 to December 30, 2015 | Secured Debt | 2014 Term Loan Facilities
Line of Credit Facility
Collateral security maintenance test (as a percent)																																	125.00%
Period from December 31, 2015 to March 30, 2016 | Secured Debt | 2014 Term Loan Facilities
Line of Credit Facility
Collateral security maintenance test (as a percent)																																	130.00%
Period from March 31, 2016 and thereafter | Secured Debt | 2014 Term Loan Facilities
Line of Credit Facility
Collateral security maintenance test (as a percent)																																	135.00%
Up to June 30, 2016 | Secured Debt | $22 Million Term Loan Facility
Line of Credit Facility
Collateral security maintenance test (as a percent)																																	110.00%
Up to December 31, 2015 | Line of Credit facility | $148 Million Credit Facility
Line of Credit Facility
Collateral security maintenance test (as a percent)																																	130.00%
After December 31, 2015 | Line of Credit facility | $148 Million Credit Facility
Line of Credit Facility
Collateral security maintenance test (as a percent)																																	140.00%
Forecast | Secured Debt | $253 Million Term Loan Facility
Line of Credit Facility
Prepayment of the outstanding indebtedness	$ 5,075,000

X

- Definition

Represents the age of drybulk carriers at the time of delivery.

+ References

No definition available.

+ Details

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- Definition

Represents the age of drybulk carriers at the time of maturity of the credit facility.

+ References

No definition available.

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- Definition

Represents the amount of scheduled amortized payment due that will be reduced by the prepayment amount.

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No definition available.

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- Definition

Represents the capacity of vessels expressed in deadweight tonnage (dwt), a measure of weight a ship is carrying or can safely carry.

+ References

No definition available.

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- Definition

The percentage points added to the reference rate to compute the variable rate on the debt instrument before amendment.

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No definition available.

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- Definition

Represents the maximum ratio of the entity's interest-bearing debt to the sum of its interest-bearing debt and consolidated net worth measured on the last day of any fiscal quarter which is allowable under the terms of the debt instrument covenants.

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No definition available.

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- Definition

Represents the maximum percentage of the purchase price of a significant acquisition which may be financed with proceeds from debt instrument.

+ References

No definition available.

+ Details

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- Definition

Carrying value as of the balance sheet date of noncurrent portion of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid.

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No definition available.

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- Definition

The number of years the profile is based on for which the outstanding principle of this loan is amortized.

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No definition available.

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- Definition

Represents the appraised value of mortgaged vessels required as percentage of the aggregate principal amount of obligations under credit facility for ceasing of mandatory payment obligations.

+ References

No definition available.

+ Details

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- Definition

Maximum amount of borrowings on the line of credit facility which may be used for working capital purposes.

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No definition available.

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- Definition

Represents the minimum cash required per vessel mortgaged under this facility.

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No definition available.

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- Definition

Represents the ratio of consolidated total debt to consolidated adjusted earnings before, interest, taxes, depreciation and amortization allowed under the terms of the credit facilities' covenants.

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No definition available.

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- Definition

Represents the consolidated net worth threshold amount calculated as per the terms of the credit facilities' covenants.

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No definition available.

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- Definition

Represents the percentage of the value of any subsequent primary equity offerings that is used in the calculation of consolidated net worth threshold amount as per the terms of the credit facilities' covenants.

+ References

No definition available.

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- Definition

Represents the aggregate fair value of the mortgaged vessels to be maintained as a percentage of aggregate outstanding principal amount as per the terms of the credit facilities' covenants.

+ References

No definition available.

+ Details

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- Definition

Represents the aggregate fair value of the mortgaged vessels actual as a percentage of aggregate outstanding principal amount as per the terms of the credit facilities' covenants.

+ References

No definition available.

+ Details

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X

- Definition

Represents the ratio of EBITDA (earnings before interest, taxes, depreciation and amortization) to interest expense required to be maintained under the credit facilities' covenants.

+ References

No definition available.

+ Details

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Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The decrease in the maximum borrowing capacity under the line of credit facility.

+ References

No definition available.

+ Details

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

X

- Definition

Represents the percentage of facility fee on the average daily outstanding principal amount of the loans outstanding.

+ References

No definition available.

+ Details

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

X

- Definition

Represents the reduction in facility fee if equity offering results in desired gross proceeds.

+ References

No definition available.

+ Details

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

X

- Definition

Represents the percentage of indebtedness allowed to be incurred for vessel acquisitions as a percentage of the lesser of the vessel acquisition cost or fair market value.

+ References

No definition available.

+ Details

Name:	gnk_LineOfCreditFacilityIndebtednessToBeIncurredForVesselAcquisitionAsPercentageOfLesserOfVesselAcquisitionCostOrFairMarketValue
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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the minimum amount of cash balances necessary for quarterly repayments on the credit facility under the terms of the agreement.

+ References

No definition available.

+ Details

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

X

- Definition

Represents the minimum cash balance per vessel required to be maintained under the credit facility, before amendment.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Represents the minimum cash balance per vessel required to be maintained for vessels owned under the credit facility.

+ References

No definition available.

+ Details

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

X

- Definition

Represents the number of credit facilities that will not increase the amount of principal indebtedness outstanding or change their maturity dates.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the number of credit facilities, which are not subject to new facility fee.

+ References

No definition available.

+ Details

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

X

- Definition

Represents the number of draws made as of the reporting date.

+ References

No definition available.

+ Details

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Namespace Prefix:	gnk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Represents the number of draws per vessel made as of the reporting date.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Represents the number of credit facilities in which the consenting lenders received an upfront fee.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the number of credit facilities having prepaid scheduled amortization payments which were applied in order of maturity.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the number of credit facilities in which the vessels pledged under the facilities were granted a second priority security interest.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the required payment amount under the line of credit facility due on final maturity date.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Represents the amount of upfront fee paid under the terms of credit facilities.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Represents the percentage of repayments to be allocated to the final payment at maturity under the line of credit facility.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the percentage of repayments to be allocated to the scheduled mandatory principal repayments under the line of credit facility.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the percentage fee required to be paid upon maturity under the line of credit facility based on the amount outstanding following the prepayment pursuant to the amendment.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the amount of principal to be paid in the first scheduled payment of the line of credit facility after amendment.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Represents the maturity term of the credit facility from the date of the first drawdown.

+ References

No definition available.

+ Details

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

X

- Definition

Represents the number of credit facilities terminated upon entry into new credit facility.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Represents the upfront fee as a percentage of the amount outstanding under the line of credit facilities paid to consenting lenders.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The maximum percentage of collateral required for prepayment of line of credit using excess cash flows.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
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Period Type:	duration

X

- Definition

Represents the number of collateral vessels, in which the loan is to be prepaid from earnings received from operations after deduction of costs, fees, expenses, interest, and fixed principal repayments under the facility; operating expenses relating to the vessels; and the Borrowers' pro rata share of general and administrative expenses based on the number of vessels they own.

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	duration

X

- Definition

Represents the line of credit period without amortization, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

X

- Definition

Represents the amended maximum percentage of fleetwide liquidity covenant required.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

X

- Definition

Represents the ratio of total debt outstanding to value adjusted total assets (total assets adjustment for the difference between book value and market value of fleet vessels).

+ References

No definition available.

+ Details

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Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of minimum condensed net worth to be maintained.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Represents the minimum period of working capital lines with remaining availability, in which the covenant of 50% of the required covenant of cash per vessel is satisfied.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

X

- Definition

Number of days after notice from trustee the entity is required cure the default of not making the scheduled amortization payment of its Convertible Senior Notes.

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of days after year end the audited financial statements are to be furnished to certain lenders to allow discussions to continue without the need to file for bankruptcy relief.

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of unencumbered assets adding as additional collateral to cover the shortfall of fair value of mortgaged assets.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the number of vessels in the fleet.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Represents the number of vessels mortgaged by the entity as collateral in support of agreements.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Represents the number of vessels owned by each of the entity's wholly-owned ship-owning subsidiaries who act as guarantors under debt instrument.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Represents the number of vessels to be acquired by the entity under purchase agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	gnk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Represents the number of vessels under option to purchase pursuant to the purchase agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	gnk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of Entities owned or controlled by the company.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the period of time the entity pledged collateral for the Credit Facility prior to it's effective date.

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of payment made towards outstanding debt during the period.

+ References

No definition available.

+ Details

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Namespace Prefix:	gnk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Represents the reduction in minimum consolidated net worth ratio.

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	instant

X

- Definition

Represents the remedy period available to post additional collateral or reduce the amount of the revolving loans and/or letters of credit outstanding under the terms of the credit facilities' covenants.

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
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Period Type:	duration

X

- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Section 02
-Paragraph 22
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X

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-SubTopic 210
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-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 19, 20, 22
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Balance Type:	na
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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Period Type:	instant

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- Definition

Amount of the required periodic payments of both interest and principal.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Data Type:	xbrli:monetaryItemType
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- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-SubTopic 10
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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

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- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Data Type:	xbrli:monetaryItemType
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- References

No definition available.

+ Details

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- Definition

Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in 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
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-SubTopic 10
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-04.(a))
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