Amounts paid for drydock costs performed pursuant to regulatory requirements.

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The net change during the reporting period in the amount of outstanding money paid in advance for goods or services that bring economic benefits for future periods and other operating assets not otherwise defined in the taxonomy.

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Amount of interest expense related to the de-designation of the interest rate swap.

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This element represents the payments for cash settlement of non-accredited Note holders.

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This element represents a subsidiary's cash outflow from distribution of earnings to the stockholders.

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The cash outflow associated with acquisition of vessels, including deposits.

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Represents the non-cash reorganization items and fresh start accounting adjustments, net.

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Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The increase (decrease) during the reporting period in the amounts payable to vendors for goods and services received and the amount of obligations and expenses incurred but not paid.

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The increase (decrease) during the reporting period, excluding the portion taken into income, in the liability reflecting revenue yet to be earned for which cash or other forms of consideration was received or recorded as a receivable.

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The increase (decrease) during the reporting period in other obligations not otherwise defined in the taxonomy where the payments will be made in future periods.

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The net cash inflow or outflow for the increase (decrease) associated with funds that are not available for withdrawal or use (such as funds held in escrow) and are associated with underlying transactions that are classified as investing activities.

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The increase (decrease) in cash associated with the entity's continuing operating, investing, and financing activities. While for technical reasons this element has no balance attribute, the default assumption is a debit balance consistent with its label.

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No definition available.

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Amount of cash inflow (outflow) of financing activities, excluding discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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Amount of cash inflow (outflow) of investing activities, excluding discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

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Amount of cash inflow (outflow) from operating activities, excluding discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

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The cash outflow for loan and debt issuance costs.

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The cash outflow for cost incurred directly with the issuance of an equity security.

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Cash outflow for purchase of trading, available-for-sale securities and held-to-maturity securities.

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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The cash inflow from the additional capital contribution to the entity.

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The cash inflow from amounts received from issuance of long-term debt that is wholly or partially secured by collateral. Excludes proceeds from tax exempt secured debt.

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The cash inflow from issuance of rights to purchase common shares at predetermined price (usually issued together with corporate debt).

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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.

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Amount of cash inflow from a noncontrolling interest. Includes, but is not limited to, purchase of additional shares or other increase in noncontrolling interest ownership.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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The amount of previously reported deferred or unearned revenue that was recognized as revenue during the period. For cash flows, this element primarily pertains to amortization of deferred credits on long-term arrangements. As a noncash item, it is deducted from net income when calculating cash provided by or used in operations using the indirect method.

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Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended		12 Months Ended
	Dec. 31, 2014	Jul. 09, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities:
Net (loss) income	$ (213,358)us-gaap_ProfitLoss
Adjustments to reconcile net (loss) income to net cash used in operating activities:
Goodwill impairment	166,067us-gaap_GoodwillImpairmentLoss
Depreciation and amortization	36,714
Amortization of deferred financing costs	845us-gaap_AmortizationOfFinancingCosts
Amortization of time charters acquired	450us-gaap_RecognitionOfDeferredRevenue
Amortization of nonvested stock compensation expense	20,405us-gaap_ShareBasedCompensation
Change in assets and liabilities:
(Increase) decrease in due from charterers	(1,545)
Decrease (increase) in prepaid expenses and other current assets	8,343
(Decrease) increase in accounts payable and accrued expenses	(39,170)
Increase (decrease) in deferred revenue	400
Increase in lease obligations	390
Deferred drydock costs incurred	(6,376)gnk_DeferredDrydockCostsIncurred
Net cash used in operating activities	(26,835)
Cash flows from investing activities:
Purchase of vessels, including deposits	(24,473)
Purchase of other fixed assets	(208)
Changes in deposits of restricted cash	(19,420)
Net cash used in investing activities	(44,101)
Cash flows from financing activities:
Payment of dividend by subsidiary	(1,025)gnk_PaymentsOfDividendsBySubsidiary
Cash settlement of non-accredited Note holders	(484)
Payment of deferred financing costs	(2,322)us-gaap_PaymentsOfFinancingCosts
Net cash provided by (used in) financing activities	18,273
Net (decrease) increase in cash and cash equivalents	(52,663)
Cash and cash equivalents at beginning of period	136,077
Cash and cash equivalents at end of period	83,414
Predecessor
Cash flows from operating activities:
Net (loss) income		784,557	(157,021)	(157,776)
Adjustments to reconcile net (loss) income to net cash used in operating activities:
Non-cash reorganization items and fresh start accounting adjustments, net		(917,399)
Depreciation and amortization		75,952	140,743	139,063
Amortization of deferred financing costs		4,461	9,116	5,413
Amortization of time charters acquired		(68)	(334)	(746)
Amortization of discount on Convertible Senior Notes		1,592	4,963	4,537
Receipt of stock in lieu of cash payment			(100)
Interest expense related to the de-designation of the interest rate swap		1,048
Unrealized loss (gain) on derivative instruments			4	(100)
Amortization of nonvested stock compensation expense		4,352	4,482	5,864
Change in assets and liabilities:
(Increase) decrease in due from charterers		1,047	(2,527)	1,974
Decrease (increase) in prepaid expenses and other current assets		(11,735)	(919)	(437)
(Decrease) increase in accounts payable and accrued expenses		32,534	2,765	(4,880)
Increase (decrease) in deferred revenue		(600)	273	(2,903)
Increase in lease obligations		195	143	1,324
Deferred drydock costs incurred		(9,253)	(4,732)	(10,167)
Net cash used in operating activities		(33,317)	(3,144)	(18,834)
Cash flows from investing activities:
Purchase of vessels, including deposits		(29,995)	(145,350)	(1,155)
Purchase of other fixed assets		(415)	(1,205)	(2,114)
Changes in deposits of restricted cash		(125)		(400)
Net cash used in investing activities		(30,535)	(146,555)	(3,669)
Cash flows from financing activities:
Repayments on the 2007 Credit Facility				(118,588)
Proceeds from Lines of Credit			1,000
Payment of dividend by subsidiary		(2,046)	(1,589)	(4,081)
Proceeds from Rights Offering		100,000
Proceeds from Issuance of Common Stock				50,721
Payment of common stock issuance costs				(847)
Proceeds from issuance of common stock by subsidiary			136,980
Payment of common stock issuance costs by subsidiary		(111)	(706)
Payment of deferred financing costs		(4,515)	(1,489)	(4,085)
Net cash provided by (used in) financing activities		77,207	199,821	(132,865)
Net (decrease) increase in cash and cash equivalents		13,355	50,122	(155,368)
Cash and cash equivalents at beginning of period		122,722	72,600	227,968
Cash and cash equivalents at end of period		136,077	122,722	72,600
$100 Million Term Loan Facility
Cash flows from financing activities:
Repayments on Term Loan Facility	(3,846)
$100 Million Term Loan Facility \| Predecessor
Cash flows from financing activities:
Repayments on Term Loan Facility		(3,846)		(15,385)
$253 Million Term Loan Facility
Cash flows from financing activities:
Repayments on Term Loan Facility	(5,075)
$253 Million Term Loan Facility \| Predecessor
Cash flows from financing activities:
Repayments on Term Loan Facility		(10,150)		(40,600)
Baltic Trading $22 Million Term Loan Facility
Cash flows from financing activities:
Repayments on Term Loan Facility	(750)
Baltic Trading $22 Million Term Loan Facility \| Predecessor
Cash flows from financing activities:
Repayments on Term Loan Facility		(750)	(375)
Proceeds from Term Loan Facility			22,000
Baltic Trading $44 Million Term Loan Facility
Cash flows from financing activities:
Repayments on Term Loan Facility	(1,375)
Baltic Trading $44 Million Term Loan Facility \| Predecessor
Cash flows from financing activities:
Repayments on Term Loan Facility		(1,375)
Proceeds from Term Loan Facility			44,000
2014 Baltic Trading Term Loan Facility
Cash flows from financing activities:
Proceeds from Lines of Credit	$ 33,150