Summary of Significant Accounting Policies (Details) - USD ($)		Dec. 31, 2019	Dec. 31, 2018
U.S. Equity Cumulative Dividends Fund-Series 2027 [Member]
Summary of Investment Holdings [Line Items]
Total Investments in Securities		$ 23,583,730	$ 4,495,280
Total Other Financial Instruments	[1]	486,829	(596,913)
U.S. Equity Cumulative Dividends Fund-Series 2027 [Member] | Level 1 [Member]
Summary of Investment Holdings [Line Items]
Total Investments in Securities
Total Other Financial Instruments	[1]	486,829	(596,913)
U.S. Equity Cumulative Dividends Fund-Series 2027 [Member] | Level 2 [Member]
Summary of Investment Holdings [Line Items]
Total Investments in Securities		23,583,730	4,495,280
Total Other Financial Instruments	[1]
U.S. Equity Cumulative Dividends Fund-Series 2027 [Member] | Level 3 [Member]
Summary of Investment Holdings [Line Items]
Total Investments in Securities
Total Other Financial Instruments	[1]
U.S. Equity Cumulative Dividends Fund-Series 2027 [Member] | U.S. Treasury Obligations [Member]
Summary of Investment Holdings [Line Items]
Total Investments in Securities		23,583,730	4,495,280
U.S. Equity Cumulative Dividends Fund-Series 2027 [Member] | U.S. Treasury Obligations [Member] | Level 1 [Member]
Summary of Investment Holdings [Line Items]
Total Investments in Securities
U.S. Equity Cumulative Dividends Fund-Series 2027 [Member] | U.S. Treasury Obligations [Member] | Level 2 [Member]
Summary of Investment Holdings [Line Items]
Total Investments in Securities		23,583,730	4,495,280
U.S. Equity Cumulative Dividends Fund-Series 2027 [Member] | U.S. Treasury Obligations [Member] | Level 3 [Member]
Summary of Investment Holdings [Line Items]
Total Investments in Securities
U.S. Equity Cumulative Dividends Fund-Series 2027 [Member] | Unrealized Appreciation [Member]
Summary of Investment Holdings [Line Items]
Total Other Financial Instruments	[1]	486,829	4,301
U.S. Equity Cumulative Dividends Fund-Series 2027 [Member] | Unrealized Appreciation [Member] | Level 1 [Member]
Summary of Investment Holdings [Line Items]
Total Other Financial Instruments	[1]	486,829	4,301
U.S. Equity Cumulative Dividends Fund-Series 2027 [Member] | Unrealized Appreciation [Member] | Level 2 [Member]
Summary of Investment Holdings [Line Items]
Total Other Financial Instruments	[1]
U.S. Equity Cumulative Dividends Fund-Series 2027 [Member] | Unrealized Appreciation [Member] | Level 3 [Member]
Summary of Investment Holdings [Line Items]
Total Other Financial Instruments	[1]
U.S. Equity Cumulative Dividends Fund-Series 2027 [Member] | Unrealized Depreciation [Member]
Summary of Investment Holdings [Line Items]
Total Other Financial Instruments	[1]		(601,214)
U.S. Equity Cumulative Dividends Fund-Series 2027 [Member] | Unrealized Depreciation [Member] | Level 1 [Member]
Summary of Investment Holdings [Line Items]
Total Other Financial Instruments	[1]		(601,214)
U.S. Equity Cumulative Dividends Fund-Series 2027 [Member] | Unrealized Depreciation [Member] | Level 2 [Member]
Summary of Investment Holdings [Line Items]
Total Other Financial Instruments	[1]
U.S. Equity Cumulative Dividends Fund-Series 2027 [Member] | Unrealized Depreciation [Member] | Level 3 [Member]
Summary of Investment Holdings [Line Items]
Total Other Financial Instruments	[1]
U.S. Equity Ex-Dividend Fund-Series 2027 [Member]
Summary of Investment Holdings [Line Items]
Total Investments in Securities		25,837,538	11,248,789
Total Other Financial Instruments	[1]	360,953	(271,626)
U.S. Equity Ex-Dividend Fund-Series 2027 [Member] | Level 1 [Member]
Summary of Investment Holdings [Line Items]
Total Investments in Securities
Total Other Financial Instruments	[1]	360,953	(271,626)
U.S. Equity Ex-Dividend Fund-Series 2027 [Member] | Level 2 [Member]
Summary of Investment Holdings [Line Items]
Total Investments in Securities		25,837,538	11,248,789
Total Other Financial Instruments	[1]
U.S. Equity Ex-Dividend Fund-Series 2027 [Member] | Level 3 [Member]
Summary of Investment Holdings [Line Items]
Total Investments in Securities
Total Other Financial Instruments	[1]
U.S. Equity Ex-Dividend Fund-Series 2027 [Member] | U.S. Treasury Obligations [Member]
Summary of Investment Holdings [Line Items]
Total Investments in Securities		25,837,538	11,248,789
U.S. Equity Ex-Dividend Fund-Series 2027 [Member] | U.S. Treasury Obligations [Member] | Level 1 [Member]
Summary of Investment Holdings [Line Items]
Total Investments in Securities
U.S. Equity Ex-Dividend Fund-Series 2027 [Member] | U.S. Treasury Obligations [Member] | Level 2 [Member]
Summary of Investment Holdings [Line Items]
Total Investments in Securities		25,837,538	11,248,789
U.S. Equity Ex-Dividend Fund-Series 2027 [Member] | U.S. Treasury Obligations [Member] | Level 3 [Member]
Summary of Investment Holdings [Line Items]
Total Investments in Securities
U.S. Equity Ex-Dividend Fund-Series 2027 [Member] | Unrealized Appreciation [Member]
Summary of Investment Holdings [Line Items]
Total Other Financial Instruments	[1]	392,188	358,223
U.S. Equity Ex-Dividend Fund-Series 2027 [Member] | Unrealized Appreciation [Member] | Level 1 [Member]
Summary of Investment Holdings [Line Items]
Total Other Financial Instruments	[1]	392,188	358,223
U.S. Equity Ex-Dividend Fund-Series 2027 [Member] | Unrealized Appreciation [Member] | Level 2 [Member]
Summary of Investment Holdings [Line Items]
Total Other Financial Instruments	[1]
U.S. Equity Ex-Dividend Fund-Series 2027 [Member] | Unrealized Appreciation [Member] | Level 3 [Member]
Summary of Investment Holdings [Line Items]
Total Other Financial Instruments	[1]
U.S. Equity Ex-Dividend Fund-Series 2027 [Member] | Unrealized Depreciation [Member]
Summary of Investment Holdings [Line Items]
Total Other Financial Instruments	[1]	(31,235)	(629,849)
U.S. Equity Ex-Dividend Fund-Series 2027 [Member] | Unrealized Depreciation [Member] | Level 1 [Member]
Summary of Investment Holdings [Line Items]
Total Other Financial Instruments	[1]	(31,235)	(629,849)
U.S. Equity Ex-Dividend Fund-Series 2027 [Member] | Unrealized Depreciation [Member] | Level 2 [Member]
Summary of Investment Holdings [Line Items]
Total Other Financial Instruments	[1]
U.S. Equity Ex-Dividend Fund-Series 2027 [Member] | Unrealized Depreciation [Member] | Level 3 [Member]
Summary of Investment Holdings [Line Items]
Total Other Financial Instruments	[1]
U.S. Equity Ex-Dividends Fund-Series 2027
Summary of Investment Holdings [Line Items]
Total Investments in Securities		$ 25,837,538	$ 11,248,789

[1] Futures contracts are valued at unrealized appreciation (depreciation) on the instrument.