The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Balance held at close of period in number of shares.

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Percent of net assets at close of period. For schedules of investments that are categorized, each category has a percent of net assets for the aggregated value of the Investments in the category.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Price of a single share of a number of saleable stocks of a company.

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Related Party Transactions - Equity-Method Investment (Details Textual) - $ / shares	Dec. 31, 2021	Feb. 28, 2021	Jun. 30, 2018
Maximum [Member]
Related Party Transaction [Line Items]
Equity method ownership percentage	50.00%
Vallon Pharmaceuticals, Inc. [Member]
Related Party Transaction [Line Items]
Percentage of owned shares	12.00%
ADAIR Technology [Member] \| Vallon Pharmaceuticals, Inc. [Member]
Related Party Transaction [Line Items]
Equity method ownership percentage			30.00%
Number of shares owned		843,750
Percentage of owned shares		12.00%
ADAIR Technology [Member] \| Vallon Pharmaceuticals, Inc. [Member] \| Maximum [Member]
Related Party Transaction [Line Items]
Share price		$ 8.00