v2.4.0.6

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2012 | Sep. 30, 2011 | Sep. 30, 2012 USDperLwt | Sep. 30, 2011
Vessels, net |  |  |  |
Useful lives |  |  | 25 years |
Depreciation expense | $ 3,720 | $ 3,720 | $ 11,079 | $ 11,034
Estimated scrap value (per lwt) |  |  | 245 |
Voyage expense recognition |  |  |  |
Net loss (gain) on purchase and sale of bunker fuel | $ 119 | $ 0 | $ 45 | $ (521)
Computer equipment |  |  |  |
Fixed assets, net |  |  |  |
Useful lives |  |  | 3 years |
Vessel equipment | Minimum |  |  |  |
Fixed assets, net |  |  |  |
Useful lives |  |  | 2 years |
Vessel equipment | Maximum |  |  |  |
Fixed assets, net |  |  |  |
Useful lives |  |  | 15 years |

X
- Definition Represents the depreciation charged on vessels. + References No definition available. + Details
Name: | balt_DepreciationExpenseForVessels
Namespace Prefix: | balt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the net gains or losses resulting from the difference between the cost of bunker fuel delivered by the terminating charterer and the bunker fuel sold to the new charterer. + References No definition available. + Details
Name: | balt_GainLossOnPurchaseAndSaleOfBunkerFuel
Namespace Prefix: | balt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Definition Represents estimated scrap value of vessels. + References No definition available. + Details
Name: | balt_VesselsEstimatedScrapValue
Namespace Prefix: | balt_
Data Type: | us-types:perUnitItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the estimated useful lives of vessels. + References No definition available. + Details
Name: | balt_VesselsEstimatedUsefulLives
Namespace Prefix: | balt_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration