Investment in the Funds - Net Investment Income (Loss), Total Trading Results and Net Income (Loss) for Funds (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Investment Holdings [Line Items]
Net Investment Income (Loss)	$ (1,795,064)	$ (2,955,334)	$ (4,870,840)
Total Trading Results	1,559,616	(820,027)	502,983
Net income (loss)	(235,448)	(3,775,361)	$ (4,367,857)
SECOR Master Fund L.P. [Member]
Investment Holdings [Line Items]
Net Investment Income (Loss)	(184,045)	18,180
Total Trading Results	8,191,065	(2,107,396)
Net income (loss)	8,007,020	(2,089,216)
CMF Harbour Square Master Fund LLC [Member]
Investment Holdings [Line Items]
Net Investment Income (Loss)	244,803
Total Trading Results	416,882
Net income (loss)	661,685
CMF AE Capital Master Fund LLC [Member]
Investment Holdings [Line Items]
Net Investment Income (Loss)	180,229
Total Trading Results	(1,180,663)
Net income (loss)	(1,000,434)
Cambridge Master Fund L.P. [Member]
Investment Holdings [Line Items]
Net Investment Income (Loss)	371,194	141,596
Total Trading Results	(3,386,331)	1,967,437
Net income (loss)	$ (3,015,137)	2,109,033
CMF Willowbridge Master Fund L.P. [Member]
Investment Holdings [Line Items]
Net Investment Income (Loss)		155,028
Total Trading Results		(5,302,674)
Net income (loss)		$ (5,147,646)