Length of period for charter contract for vessel.

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- Definition

Rental expense related to hire of vessels under operating leases contracts.

+ References

No definition available.

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- Definition

The net gain or loss resulting from the sale, transfer, termination, or other disposition of assets during the period and amortization of deferred gains.

+ References

No definition available.

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- Definition

Gain on sale leaseback transaction recognized in period including amortized gains.

+ References

No definition available.

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- Definition

Number of vessels leased on operating leases which were disposed over during the period.

+ References

No definition available.

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- Definition

Dayrate for charter of vessel under sale leaseback transaction.

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No definition available.

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- Definition

The number of vessels leased on long-term time charters and bareboat charters from third parties and related parties.

+ References

No definition available.

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- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.14)

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

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 14

-Article 5

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- Definition

Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

+ References

No definition available.

+ Details

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- Definition

Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717

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

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-SubTopic 10

-Section 55

-Paragraph 40

-Subparagraph (Note 3)

-URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due 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

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- Definition

Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fifth 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

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- Definition

Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fourth 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

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- Definition

Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the third 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

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- Definition

Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the second 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

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due after the fifth 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

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- Definition

Future minimum rental payments in aggregate as of the balance sheet date under operating leases.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718

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- Definition

Future rental payments receivable within one year of the balance sheet date under an operating lease.

+ References

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- Definition

Future rental payments receivable within the fifth year from the balance sheet date under an operating lease.

+ References

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- Definition

Future rental payments receivable within the fourth year from the balance sheet date under an operating lease.

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- Definition

Future rental payments receivable within the third year from the balance sheet date under an operating lease.

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- Definition

Future rental payments receivable within the second year from the balance sheet date under an operating lease.

+ References

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- Definition

Future minimum lease payments receivable under operating leases for periods greater than five years following the balance sheet date.

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- Definition

Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.13)

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LEASES (Details) (USD $)	12 Months Ended				1 Months Ended
LEASES (Details) (USD $)	Dec. 31, 2014 vessel	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Jan. 31, 2011	Mar. 31, 2011
Leases, Schedule of Leased Assets [Line Items]
Total vessels leased in on long-term time and bareboat charters	21fro_TotalVesselsLeasedIn
Rental expense for operating leases	$ 2,200,000us-gaap_LeaseAndRentalExpense	$ 6,600,000us-gaap_LeaseAndRentalExpense	$ 40,000,000us-gaap_LeaseAndRentalExpense
Gain on sale of assets and amortization of deferred gains	24,620,000fro_GainLossOnSaleOfAssets	23,558,000fro_GainLossOnSaleOfAssets	34,759,000fro_GainLossOnSaleOfAssets
Charter hire expenses	0fro_CharterhireExpenses	4,176,000fro_CharterhireExpenses	37,461,000fro_CharterhireExpenses
Future minimum operating lease payments
2015	1,908,000
2016	642,000
2017	508,000
2018	350,000
2019	334,000
Thereafter	1,586,000
Total minimum lease payments	5,328,000
Minimum lease revenues [Abstract]
2015	4,435,000
2016	0
2017	0
2018	0
2019	0
Thereafter	0
Total minimum lease revenues	4,435,000
Maritime Equipment [Member] \| Front VLCC Shanghai renamed Gulf Eyadah [Member]
Leases, Schedule of Leased Assets [Line Items]
Gain on sale of assets and amortization of deferred gains				6,400,000
Maritime Equipment [Member] \| VLCC Front Eagle renamed DHT Eagle [Member]
Leases, Schedule of Leased Assets [Line Items]
Gain on sale of assets and amortization of deferred gains				3,200,000
Assets Leased to Others [Member]
Leases, Schedule of Leased Assets [Line Items]
Cost of vessels	46,200,000	166,300,000
Accumulated depreciation of vessels	33,200,000	28,800,000
Assets Held under Operating Leases [Member]
Leases, Schedule of Leased Assets [Line Items]
Number of vessels leased on operating leases which were disposed over during the period (in number of vessels)			4
Sale and Lease Back Transactions [Member] \| Maritime Equipment [Member] \| Front VLCC Shanghai renamed Gulf Eyadah [Member]
Leases, Schedule of Leased Assets [Line Items]
Charter duration of new contract with new owners					2 years
Charter rate per day of vessel					35,000
Gain on sale leaseback transaction recognized in period	0	0	7,900,000
Sale and Lease Back Transactions [Member] \| Maritime Equipment [Member] \| VLCC Front Eagle renamed DHT Eagle [Member]
Leases, Schedule of Leased Assets [Line Items]
Charter duration of new contract with new owners						2 years
Charter rate per day of vessel						32,500
Gain on sale leaseback transaction recognized in period	0	2,300,000	7,200,000
Special Purpose Entities [Member] \| Maritime Equipment [Member]
Leases, Schedule of Leased Assets [Line Items]
Charter hire expenses	$ 0	$ 0	$ 40,000