Represents the number of quarterly installments in which the line of each credit facility shall be repaid.

No definition available.

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- Definition

Represents the period after latest vessel delivery date for first periodic repayment of the line of credit facility.

+ References

No definition available.

+ Details

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

- Definition

Represents the maximum delivered cost per vessel allowed 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:	duration

- Definition

Represents the maximum percentage of delivered cost per vessel allowed under the credit facility.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Represents the maximum percentage of fair market value per vessel at delivery allowed under the credit facility.

+ References

No definition available.

+ Details

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

- Definition

Represents the percentage of each facility amount due as balloon payment at final maturity.

+ References

No definition available.

+ Details

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

- Definition

Represents percentage of facility amount due per installment.

+ References

No definition available.

+ Details

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

- Definition

Represents the percentage of outstanding principal plus interest insured by China Export & Credit Insurance Corporation (Sinosure) to cover political and commercial risks.

+ References

No definition available.

+ Details

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Namespace Prefix:	gnk_
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Balance Type:	na
Period Type:	duration

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

- 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

- Definition

Period remaining on line of credit facility before it terminates, 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

- 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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- 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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

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

- Definition

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

+ References

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
Period Type:	instant

- 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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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Reference 6: http://www.xbrl.org/2003/role/presentationRef

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-Name Regulation S-X (SX)

-Number 210

-Section 03

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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-Subparagraph (SX 210.4-08.(f))

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-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph f

-Article 4

+ Details

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

- Details

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- Details

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- Details

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- Details

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DEBT (Details 7) - Scenario, Unspecified [Domain] - Secured Debt - 2014 Baltic Trading Term Loan Facilities - Range [Domain] $ in Thousands	Dec. 30, 2014 USD ($)	Oct. 24, 2014 USD ($)	Oct. 08, 2014 USD ($) installment	Jun. 30, 2015 USD ($)	Dec. 31, 2014 USD ($)
Line of Credit Facility
Long-term debt				$ 32,450	$ 33,150
Remaining borrowing capacity				$ 0
Term of facilities			10 years
Maximum facility amount of delivered cost per vessel (as a percent)			60.00%
Maximum facility amount of fair market value per vessel at delivery (as a percent)			60.00%
Maximum facility amount of delivered cost per vessel			$ 16,800
Percentage of outstanding principal plus interest insured			95.00%
Number of semi-annual installments in which the credit facility is to be repaid \| installment			20
Amount due per installment (as a percent)			4.16%
Balloon payment of facility amount due at maturity (as a percent)			16.67%
LIBOR
Line of Credit Facility
Applicable margin over reference rate			2.50%
Reference rate			three or six-month LIBOR
Baltic Hornet
Line of Credit Facility
Maximum borrowing capacity			$ 16,800
Drawdowns during the period		$ 16,800
Period after latest vessel delivery date for first periodic repayment			6 months
Baltic Wasp
Line of Credit Facility
Maximum borrowing capacity			$ 16,800
Drawdowns during the period	$ 16,350
Period after latest vessel delivery date for first periodic repayment			6 months