The cash outflow relating to the acquisition of vessels and capital expenditures.

No definition available.

Name:	teu_AcquisitionOfVessels
Namespace Prefix:	teu_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The vessels' capacity in twenty-foot equivalent unit (TEU).

+ References

No definition available.

+ Details

Name:	teu_ContainershipCapacity
Namespace Prefix:	teu_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The gross daily charter hire rate.

+ References

No definition available.

+ Details

Name:	teu_GrossDailyCharterRate
Namespace Prefix:	teu_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The allocation of the purchase price to the intangible assets acquired, using a relative fair value basis.

+ References

No definition available.

+ Details

Name:	teu_IntangibleAssetsAcquiredPurchasePriceAllocation
Namespace Prefix:	teu_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Other Fixed Assets Gross consist of Property Plant and Equipment other than vessels. Other fixed assets, gross are stated at cost.

+ References

No definition available.

+ Details

Name:	teu_OtherFixedAssetsGross
Namespace Prefix:	teu_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The allocation of the purchase price to the vessels acquired, using a relative fair value basis.

+ References

No definition available.

+ Details

Name:	teu_VesselsAcquiredPurchasePriceAllocation
Namespace Prefix:	teu_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The date the vessel was built.

+ References

No definition available.

+ Details

Name:	teu_VesselYearBuilt
Namespace Prefix:	teu_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	instant

- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 28

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 12

-Paragraph 5

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585

+ Details

Name:	us-gaap_Depreciation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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

- 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

- Definition

Number of shares of stock issued during the period as part of a transaction to acquire assets that do not qualify as a business combination.

+ References

No definition available.

+ Details

Name:	us-gaap_StockIssuedDuringPeriodSharesPurchaseOfAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Vessels, Net and Other Fixed Assets, Net (Details) (USD $)	7 Months Ended	12 Months Ended		2 Months Ended	1 Months Ended	12 Months Ended	1 Months Ended		12 Months Ended		36 Months Ended	12 Months Ended	36 Months Ended	1 Months Ended	12 Months Ended
	Dec. 31, 2010	Dec. 31, 2012	Dec. 31, 2011	May 31, 2011 Box Voyager, Box Trader and CMA CGM Kingfish	May 31, 2011 CMA CGM Marlin	Dec. 31, 2012 CMA CGM Marlin	May 31, 2011 Maule and Maersk Diadema	Jun. 30, 2011 MSC Emma	Dec. 31, 2012 MSC Emma	Dec. 31, 2012 OOCL Hong Kong	Jun. 25, 2015 OOCL Hong Kong	Dec. 31, 2012 OOCL China	Jul. 05, 2015 OOCL China	Jun. 30, 2012 OOCL Hong Kong and OOCL China	Dec. 31, 2012 Other fixed assets	Dec. 31, 2011 Other fixed assets
Property Plant And Equipment [Line Items]
Acquisition of vessels				$ 105,000,000	$ 29,500,000		$ 138,875,000	$ 55,000,000						$ 62,310,000
Shares exchanged for vessel purchase				3,437,500	1,562,500
TEU						5,095			5,060	5,344		5,344
Vessel year built						2007			2004	1995		1996
Gross daily charter rate											26,800		26,800
Vessels purchase price		49,261,117
Intangible assets purchase price		13,048,883
Other fixed assets, gross															299,922	293,080
Useful life		30 years													5 years
Depreciation	$ 0	$ 15,027,280	$ 8,050,079												$ 60,232	$ 17,328