Statements of Financial Condition - USD ($)		Dec. 31, 2017	Dec. 31, 2016
Equity in trading account:
Cash (Note 3c)		$ 25,880,554	$ 26,494,170
Cash margin (Note 3c)		9,145,348	11,471,701
Options purchased, at fair value (cost $147,400 and $577,300 at December 31, 2017 and 2016, respectively)		211,200	621,000
Total trading equity		35,237,102	38,586,871
Total assets		60,344,765	73,580,357
Liabilities:
Written options, at fair value (premium received $157,300 and $635,950 at December 31, 2017 and 2016, respectively)		209,000	699,200
Accrued expenses:
Ongoing selling agent fees (Note 3c)		99,043	119,813
Advisory fees (Note 3b)		99,229	120,573
Administrative fees (Note 3a)		49,614	60,287
Professional fees		135,185	44,128
Other		7,948	3,096
Redemptions payable (Note 5)		699,530	732,695
Total liabilities		1,299,549	1,779,792
Partners’ Capital: (Notes 1 and 5)
Total partners’ capital		59,045,216	71,800,565
Total liabilities and partners’ capital		60,344,765	73,580,357
U.S. Government Securities [Member]
Equity in trading account:
Investments in U.S. government securities, at fair value (cost $25,039,569 and $34,975,633 at December 31, 2017 and 2016, respectively)		25,107,663	34,993,486
Class GP [Member]
Partners’ Capital: (Notes 1 and 5)
General Partner, Class GP, (293.0594 and 327.3092 unit equivalents outstanding at December 31, 2017 and 2016, respectively)		356,295	370,552
Total partners’ capital	[1]	$ 356,295	$ 370,552
Net asset value per unit:
Net asset value per unit		$ 1,215.79	$ 1,132.11
Class A [Member]
Partners’ Capital: (Notes 1 and 5)
Limited Partners		$ 58,139,561	$ 70,225,435
Total partners’ capital		$ 58,139,561	$ 70,225,435
Net asset value per unit:
Net asset value per unit		$ 1,253.14	$ 1,234.93
Class D [Member]
Partners’ Capital: (Notes 1 and 5)
Limited Partners		$ 549,360	$ 1,204,578
Total partners’ capital		$ 549,360	$ 1,204,578
Net asset value per unit:
Net asset value per unit		$ 1,341.44	$ 1,309.33

[1] Class GP commenced on May 1, 2015.