Consolidated Statements of Changes in Members' Capital - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Members' capital, beginning balance	$ 27,978,759	$ 37,181,465
Subscriptions	373,500	0
Redemptions	(4,528,194)	(7,570,182)
Net income (loss)	3,520,035	(1,632,524)
Members' capital, ending balance	27,344,100	27,978,759
Class 0 Units [Member]
Members' capital, beginning balance	$ 16,801,362	$ 23,163,675
Members' capital, beginning balance (in units)	125,660.811	164,393.539
Subscriptions	$ 300,000	$ 0
Subscriptions (in units)	2,256.343	0
Redemptions	$ (2,708,694)	$ (5,422,944)
Redemptions (in units)	(18,701.289)	(38,732.728)
Net income (loss)	$ 2,212,861	$ (939,369)
Members' capital, ending balance	$ 16,605,529	$ 16,801,362
Members' capital, ending balance (in units)	109,215.865	125,660.811
Class 2 Units [Member]
Members' capital, beginning balance	$ 11,177,397	$ 14,017,790
Members' capital, beginning balance (in units)	116,424.562	137,512.329
Subscriptions	$ 73,500	$ 0
Subscriptions (in units)	775.525	0
Redemptions	$ (1,819,500)	$ (2,147,238)
Redemptions (in units)	(18,089.734)	(21,087.767)
Net income (loss)	$ 1,307,174	$ (693,155)
Members' capital, ending balance	$ 10,738,571	$ 11,177,397
Members' capital, ending balance (in units)	99,110.353	116,424.562