XML 24 R78.htm IDEA: XBRL DOCUMENT
v2.4.1.9

NEWBUILDINGS (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Apr. 30, 2014 vessel
NEWBUILDINGS [Abstract] |  |  |  |
Balance, beginning of period | $ 29,668 us-gaap_ConstructionInProgressGross | $ 26,913 us-gaap_ConstructionInProgressGross | $ 13,049 us-gaap_ConstructionInProgressGross |
Installments and newbuilding supervision fees paid | 42,130 fro_InstallmentsAndNewbuildingSupervisionFeesPaid | 572 fro_InstallmentsAndNewbuildingSupervisionFeesPaid | 12,936 fro_InstallmentsAndNewbuildingSupervisionFeesPaid |
Interest capitalized | 411 us-gaap_InterestCostsCapitalized | 2,183 us-gaap_InterestCostsCapitalized | 928 us-gaap_InterestCostsCapitalized |
Transfers to Vessels and Equipment | (56,740)fro_TransfersToVesselsAndEquipment |  |  |
Balance, end of period | $ 15,469 us-gaap_ConstructionInProgressGross | $ 29,668 us-gaap_ConstructionInProgressGross | $ 26,913 us-gaap_ConstructionInProgressGross |
number of vessels swapped |  |  |  | 2 fro_Numberofvesselsswapped

X
- Definition Additions to construction in progress for supervision fees paid. + References No definition available. + Details
Name: | fro_InstallmentsAndNewbuildingSupervisionFeesPaid
Namespace Prefix: | fro_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | fro_NewbuildingsAbstract
Namespace Prefix: | fro_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition number of vessels swapped + References No definition available. + Details
Name: | fro_Numberofvesselsswapped
Namespace Prefix: | fro_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Current year reclassification from construction in progress to long-lived, physical assets used in the normal conduct of business and not intended for resale. + References No definition available. + Details
Name: | fro_TransfersToVesselsAndEquipment
Namespace Prefix: | fro_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service. + 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 + Details
Name: | us-gaap_ConstructionInProgressGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of interest capitalized during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Allowance for Funds Used during Construction -URI http://asc.fasb.org/extlink&oid=6504829 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391 + Details
Name: | us-gaap_InterestCostsCapitalized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration