Statements of Changes in Shareholders' Equity and Redeemable Capital Shares - USD ($)	Total	Retained Earnings [Member]	Redeemable Capital Shares [Member]
Balance, Shares at Oct. 31, 2017			2,300,000
Temporary Equity, Balance at Oct. 31, 2017			$ 176,007,716
Purchases of Shares			$ 42,164,974
Purchases of Shares, Shares			550,000
Redemption of Shares			$ (57,493,667)
Redemption of Shares, Shares			(750,000)
Net Increase (Decrease) due to Share Transactions			$ (15,328,693)
Net Increase (Decrease) due to Share Transactions, shares			(200,000)
Distributions	$ (470,368)	$ (470,368)
Net Comprehensive Income (Loss)	552,933	552,933
Adjustment of Redeemable Capital Shares to Redemption Value related to Retained Earnings	(82,565)	(82,565)	$ 82,565
Adjustment of Redeemable Capital Shares to Redemption Value			$ (2,928,276)
Balance, Shares at Oct. 31, 2018			2,100,000
Temporary Equity, Balance at Oct. 31, 2018			$ 157,833,312
Purchases of Shares			$ 29,260,143
Purchases of Shares, Shares			400,000
Redemption of Shares			$ (18,556,077)
Redemption of Shares, Shares			(250,000)
Net Increase (Decrease) due to Share Transactions			$ 10,704,066
Net Increase (Decrease) due to Share Transactions, shares			150,000
Distributions	(197,264)	(197,264)
Net Comprehensive Income (Loss)	178,060	178,060
Adjustment of Redeemable Capital Shares to Redemption Value related to Retained Earnings	$ 19,204	19,204	$ (19,204)
Adjustment of Redeemable Capital Shares to Redemption Value			$ (5,934,822)
Balance, Shares at Dec. 31, 2018	2,250,000		2,250,000
Temporary Equity, Balance at Dec. 31, 2018	$ 162,583,352		$ 162,583,352
Purchases of Shares			$ 63,130,986
Purchases of Shares, Shares			850,000
Redemption of Shares			$ (115,233,504)
Redemption of Shares, Shares			(1,550,000)
Net Increase (Decrease) due to Share Transactions			$ (52,102,518)
Net Increase (Decrease) due to Share Transactions, shares			(700,000)
Distributions	(975,509)	(975,509)
Net Comprehensive Income (Loss)	972,026	972,026
Adjustment of Redeemable Capital Shares to Redemption Value related to Retained Earnings	$ 3,483	$ 3,483	$ (3,483)
Adjustment of Redeemable Capital Shares to Redemption Value			$ 7,486,441
Balance, Shares at Dec. 31, 2019	1,550,000		1,550,000
Temporary Equity, Balance at Dec. 31, 2019	$ 117,963,792		$ 117,963,792

Stockholders' equity, net increase (decrease) in number of shares due to share transactions.

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Stockholders' equity, value of net increase (decrease) due to share transactions.

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Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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The difference between the carrying amount of a financial instrument subject to a registration payment arrangement recorded as temporary equity prior to adoption of FSP EITF 00-19-2 and the carrying amount reclassified to permanent equity upon the adoption of FSP EITF 00-19-2. Recorded as a cumulative effect adjustment to the beginning balance of retained earnings. Does not apply to registration payment arrangements that are no longer outstanding upon adoption of FSP EITF 00-19-2.

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Number of new stock issued during the period.

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Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

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Number of stock bought back by the entity at the exercise price or redemption price.

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Equity impact of the value of stock bought back by the entity at the exercise price or redemption price.

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Carrying amount, attributable to parent, of an entity's issued and outstanding stock which is not included within permanent equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. Includes stock with a put option held by an ESOP and stock redeemable by a holder only in the event of a change in control of the issuer.

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Change in the value of each type or class of stock classified as temporary equity during the period. The redemption requirement does not constitute an unconditional obligation that will be settled in a variable number of shares constituting a monetary value predominantly indexed to (a) a fixed monetary amount known at inception, (b) an amount inversely correlated with the residual value of the entity, or (c) an amount determined by reference to something other than the fair value of issuer's stock. Does not include mandatorily redeemable stock. The exception is if redemption is required upon liquidation or termination of the reporting entity.

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The number of securities classified as temporary equity that have been issued and are held by the entity's shareholders. Securities outstanding equals securities issued minus securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.

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