Cash Management Agreement with Affiliate (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Related Party Transactions [Abstract]
Management Fee, Description			RJOIM is paid an annual fee, currently 0.20%, calculated and accrued daily at a rate equal to 1/360 of the principal balance of the Trust's deposits held by RJOIM.
Cash and Cash Equivalents, at Carrying Value	$ 3,745,030		$ 3,745,030		$ 8,659,507
Financial Instruments, Owned, Principal Investments, at Fair Value	10,300,134		10,300,134
Noninterest Expense Investment Advisory Fees	$ 7,538	$ 13,729	$ 24,977	$ 40,594