Capital Accounts (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Capital Accounts [Abstract]
Minimum initial subscription amount	$ 10,000
Minimum cost for additional units	5,000
Minimum notice period for units subscription	3 days
Minimum notice period for units redemption	3 days
Minimum amount for partial redemption request	10,000
Minimum holding post partial redemption	10,000
Period of remittance for redemption proceeds	15 days
Capital unit redemptions [Line Items]
Redemption and conversion policies	Class 2 Units are subject to a redemption fee equal to 2% of their Net Asset Value if redeemed within six months from their subscription date and a redemption fee equal to 1% of their Net Asset Value if redeemed more than six and less than twelve months from their subscription date.
Fees paid to the manager for redemptions	$ 7,412	$ 9,849
Class 2 Units [Member]
Capital unit redemptions [Line Items]
Maximum applicable redemption fee - holding period, description	within six months from their subscription date
Minimum applicable redemption fee - holding period, description	more than six and less than twelve months from their subscription date
Class 2 Units [Member] | Minimum [Member]
Capital unit redemptions [Line Items]
Redemption fee (in hundredths)	1.00%
Class 2 Units [Member] | Maximum [Member]
Capital unit redemptions [Line Items]
Redemption fee (in hundredths)	2.00%