XML 56 R45.htm IDEA: XBRL DOCUMENT v3.10.0.1

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Percentage of gross shipping income attributable to transportation beginning or ending in the U.S. will be subject to a 4% tax without allowance for deductions			50.00%
Percentage of tax without allowance for deductions on gross shipping income attributable to transportation beginning or ending in the U.S.			4.00%
Gross transportation tax	$ 186	$ 149	$ 566	$ 246

X

- Definition

Represents the amount of gross transportation tax.

+ References

No definition available.

+ Details

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

X

- Definition

Represents the percentage of gross shipping income attributable to transportation beginning or ending in the U.S. will be subject to a 4% tax without allowance for deductions.

+ References

No definition available.

+ Details

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

X

- Definition

Represents the percentage of tax without allowance for deductions on gross shipping income attributable to transportation.

+ References

No definition available.

+ Details

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

X

- References

No definition available.

+ Details

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