Consolidated Statements of Financial Condition (USD $)	Sep. 30, 2011	Dec. 31, 2010
Equity in commodity Trading accounts:
Cash on deposit with brokers	$ 6,319,573	$ 22,388,362
Unrealized gain on open contracts	836,887	1,357,343
Purchased options on futures contracts (premiums paid - $71,734 and $245,722, respectively)	88,213	120,263
Total due from brokers	7,244,673	23,865,968
Cash and cash equivalents on deposit with affiliate	14,526,211	18,737,332
Cash on deposit with bank	1,477	16,248
Fixed income securities (cost $16,491,553 and $11,544,636), held by affiliate	16,364,813	11,540,784
Interest receivable	96,113	36,141
Cash on deposit with bank - Non-Trading	5,766,226	5,133,598
Prepaid expenses - Non-Trading	74,319	81,602
Total Assets	44,073,832	59,411,673
Equity in commodity Trading accounts:
Options written on futures contracts (premiums received - $36,596)	19,725
Accrued commissions	115,074	151,916
Accrued management fees	53,708	76,511
Accrued incentive fees	38,017	278,042
Accrued offering expenses	14,275	16,588
Accrued operating expenses	250,001	201,344
Redemptions payable - Trading	899,805	1,549,974
Accrued management fees to U.S. Bank - Non-Trading	10,709	17,492
Distribution payable - Non-Trading	328,748	1,083,908
Total liabilities	1,730,062	3,375,775
Unitholders' capital:
Unitholders' capital	42,343,770	56,035,898
Total Liabilities and Unitholders' Capital	44,073,832	59,411,673
Trading
Unitholders' capital:
Unitholders' capital	36,842,602	51,921,871
Trading \| Beneficial owners \| Class A
Unitholders' capital:
Unitholders' capital	35,454,068	49,340,822
Trading \| Beneficial owners \| Class B
Unitholders' capital:
Unitholders' capital	1,337,021	1,405,692
Trading \| Managing owner \| Class A
Unitholders' capital:
Unitholders' capital	51,513	1,175,357
Trading \| Class A
Net asset value per unit:
Net asset value per unit	$ 96.29	$ 100.64
Trading \| Class B
Net asset value per unit:
Net asset value per unit	$ 101.74	$ 104.75
LLC equity/Non-Trading
Unitholders' capital:
Unitholders' capital	5,501,168	4,114,027
Net asset value per unit:
Net asset value per unit	$ 2.42	$ 1.81
LLC equity/Non-Trading \| Participating owners
Unitholders' capital:
Unitholders' capital	775,293	737,509
LLC equity/Non-Trading \| Nonparticipating owners
Unitholders' capital:
Unitholders' capital	$ 4,725,875	$ 3,376,518

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Carrying amount as of the balance sheet date of expenditures made in advance of when the economic benefit of the cost will be realized, and which will be expensed in future periods with the passage of time or when a triggering event occurs.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 10

-Article 9

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.10)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.10)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

Name:	us-gaap_PrepaidExpenseCurrentAndNoncurrent
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. This element is for unclassified presentations; for classified presentations there is a separate and distinct element.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 1

-Article 5

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

-Publisher AICPA

-Name Audit and Accounting Guide (AAG)

-Number AAG-BRD

-Chapter 4

-Paragraph 80

-Subparagraph Exhibit 4-8, 3

-IssueDate 2006-05-01

-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 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.1)

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

+ Details

Name:	us-gaap_RestrictedCashAndCashEquivalents
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant