The cash inflow from the sale of vessels.

No definition available.

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- Definition

Represents the carrying amount on the balance sheet date of the obligations relating to shipyard installment payments.

+ References

No definition available.

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- Definition

Amount of assets held-for-sale that are not part of a disposal group, expected to be sold within a year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 15
-Paragraph 4
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=6390208&loc=d3e400-110220

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- Definition

Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=51824106&loc=d3e2443-110228

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- Definition

The amount of cash paid for commissions during the current period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (g)
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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
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-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

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- Definition

The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (c)
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-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

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- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

No definition available.

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- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
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- Definition

Number of options outstanding, including both vested and non-vested options.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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No definition available.

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SUBSEQUENT EVENTS (Details) - USD ($) $ / shares in Units, $ in Thousands						3 Months Ended	12 Months Ended
	Mar. 09, 2017	Feb. 01, 2017	Jan. 06, 2017	Jan. 05, 2017	Jul. 22, 2016	Mar. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Subsequent events
Assets Held-for-sale, Not Part of Disposal Group, Current							$ 30,195	$ 16,999
Gain (Loss) on Disposition of Assets							(24,169)	(805)	$ (8,729)
Proceeds From Sale Of Vessels							86,897		22,703
Share-based Compensation							5,651	$ 12,243	$ 1,215
Refinancing Facility
Subsequent events
Repayments of Debt							$ 60,300
Genmar Vision \| Refinancing Facility
Subsequent events
Gain (Loss) on Disposition of Assets					$ (3,200)
Proceeds From Sale Of Vessels					$ 28,000
Subsequent events.
Subsequent events
Assets Held-for-sale, Not Part of Disposal Group, Current		$ 30,200
Gain (Loss) on Disposition of Assets		6,900
Subsequent events. \| MR tanker Gener8 Consul
Subsequent events
Proceeds from Sale of Property, Plant, and Equipment		30,500
Payments for Commissions		300
Subsequent events. \| Gener8 Hector \| Korean Export Credit Facility
Subsequent events
Borrowings under term loan facilities			$ 49,500
Shipyard installment payment outstanding			$ 0
Subsequent events. \| Gener8 Ethos \| Korean Export Credit Facility
Subsequent events
Borrowings under term loan facilities	$ 50,600
Shipyard installment payment outstanding	$ 0
Subsequent events. \| Genmar Vision \| Refinancing Facility
Subsequent events
Repayments of Debt		$ 20,000
Stock options
Subsequent events
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number									343,662,000	343,662,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price									$ 38.26	$ 38.26
Stock options \| 2012 Equity Incentive Plan \| Subsequent events.
Subsequent events
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price				$ 4.69
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period				7 years
Share-based Compensation						$ 1,000
Stock options \| 2012 Equity Incentive Plan \| Subsequent events. \| CEO and Chairman
Subsequent events
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number				500,000
Stock options \| 2012 Equity Incentive Plan \| Subsequent events. \| Executive Vice President, Secretary and CFO
Subsequent events
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number				25,000