Related Party Transactions, Revenue from Transactions with Related Parties (Details) - USD ($)	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Related Party Transactions [Abstract]
Investment income	$ 55,198	$ 20,322
Underwriting and Sales Manager Fees [Member]
Related Party Transactions [Abstract]
Revenue from related party transactions		702,035
Gabelli Funds, LLC [Member] \| Gabelli U.S. Treasury Money Market Fund [Member]
Related Party Transactions [Abstract]
Affiliated investments	2,259,801	2,859,939
Investment income	33,520	232
Affiliated Entities [Member] \| Commissions [Member]
Related Party Transactions [Abstract]
Revenue from related party transactions	$ 1,179,888	$ 1,243,412
Revenue percentage	61.00%	55.00%

Percentage of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

No definition available.

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Represents the total of interest and dividend income, including any amortization and accretion (as applicable) of discounts and premiums, earned from (1) loans and leases whether held-for-sale or held-in-portfolio; (2) investment securities; (3) federal funds sold; (4) securities purchased under agreements to resell; (5) investments in banker's acceptances, commercial paper, or certificates of deposit; (6) dividend income; or (7) other investments not otherwise specified herein.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.1-5)
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Sum of the carrying amounts as of the balance sheet date of all investments.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- References

No definition available.

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Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 10
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iv))
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