Name:	tons_ManagementFeesPaidToManagingOwnerAsPercentageOfNetAssetValue
Namespace Prefix:	tons_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	tons_OperatingExpensesOrganizationalAndOfferingCostsAbstract
Namespace Prefix:	tons_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage of accrued brokerage commissions and fees accrued from NAV. The Master Fund first pays brokerage fees, and secondly from the remainder of the amounts so accrued, reimburses the Managing Owner for the Fund's and Master Fund's routine operational, administrative, and other ordinary expenses paid by the Managing Owner.

+ References

No definition available.

+ Details

Name:	tons_PercentageOfAccruedBrokerageCommissionsAndFees
Namespace Prefix:	tons_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The brokerage commissions and fees percentage accrued from NAV.

+ References

No definition available.

+ Details

Name:	tons_PercentageOfBrokerageCommissionsAndFeesChargeOnNav
Namespace Prefix:	tons_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The aggregate costs related to asset management during the reporting period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.2(d))

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

+ Details

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

- Definition

Broker-dealers often use other brokers to execute trades on their behalf. The trading broker-dealer becomes a customer of the executing broker-dealer and pays a floor brokerage fee. Such fees are paid periodically either directly to the executing broker-dealer or through a clearing house.

+ References

No definition available.

+ Details

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

GreenHaven Coal Fund 10-Q