Number of shares issued to equity method investee.

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Represents the total consideration per share.

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Conversion of stock amount converted for future equity.

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Amount converted into shares of common stock on equity investment.

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Equity Method Investment, Additional Share Price

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Number of shares of stock issued during the period pursuant to acquisitions.

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Equity Method Investment, Share Selling Restriction Period

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Equity financing of above pounds convert to ordinary shares.

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Equity Method Investments, Current Valuation

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Equity Method Investments, Increase (Decrease)

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Equity Method Investments, Pre-Investment Valuation

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Number Of Seats On Board Of Directors

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Represents the number of common shares acquired.

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Represents the percentage of common shares acquired.

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Number of shares of stock issued during the period pursuant to acquisitions.

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Percentage of voting equity interests acquired in a business combination achieved in stages, including equity interests in the acquiree held by the acquirer immediately before the acquisition date and acquired at the acquisition date.

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Amount of common stock allocated to investors to buy shares of a new issue of common stock before they are offered to the public. When stock is sold on a subscription basis, the issuer does not initially receive the total proceeds. In general, the issuer does not issue the shares to the investor until it receives the entire proceeds.

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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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This element represents the aggregate cost of investments accounted for under the equity method of accounting.

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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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This item represents the entity's ownership percentage in the investee multiplied by the investee's total equity.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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Cost of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Excludes equity method investment and investment in equity security without readily determinable fair value.

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Amount of impairment loss on investment in equity security without readily determinable fair value.

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Value of the investment at close of period. For schedules of investments that are categorized, the value would be aggregated by category. For investment in and advances to affiliates, if operations of any controlled companies are different in character from those of the company, group such affiliates within divisions and by type of activities.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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Dividends received on equity and other investments during the current period.

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

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Long-term Investments - Narrative (Details) € / shares in Units, $ / shares in Units, € in Millions									3 Months Ended		7 Months Ended
	Aug. 02, 2021 USD ($) shares	Aug. 02, 2021 EUR (€) shares	Jul. 26, 2021 USD ($)	Jun. 11, 2021 USD ($)	Apr. 20, 2021 USD ($) $ / shares shares	Mar. 03, 2021 USD ($) $ / shares shares	Nov. 19, 2020 USD ($) $ / shares shares	Oct. 22, 2020 USD ($) $ / shares shares	Mar. 31, 2022 USD ($) seat	Mar. 31, 2021 USD ($)	Aug. 13, 2021 USD ($)	Aug. 13, 2021 EUR (€)	Dec. 31, 2021 USD ($)	Oct. 19, 2021	Aug. 13, 2021 EUR (€)	Jun. 30, 2021	Apr. 21, 2021	Mar. 03, 2021 EUR (€) € / shares	Jan. 28, 2021 USD ($)	Jan. 28, 2021 EUR (€)	Dec. 20, 2019 USD ($)	Dec. 20, 2019 EUR (€)
Long-term Investments
Dividends received									$ 0	$ 0
Equity securities, FV-NI, cost							$ 1,300,000
Equity method investments									15,573,000				$ 28,088,000
Initial investment									$ 121,000
Number of board of director seats \| seat									4
Non Marketable Equity Investments
Long-term Investments
Impairment loss with respect to one non-marketable equity investment									$ 0
FNL
Long-term Investments
Percentage of ownership interest									29.00%								29.00%
Grapevine Logic, Inc. ("Grapevine")
Long-term Investments
Percentage of ownership interest					100.00%											100.00%
Solectrac
Long-term Investments
Cash payment				$ 18,000,000
Equity ownership percentage				100.00%
Solectrac
Long-term Investments
Number of shares acquired (in shares) \| shares								1,400,000
Percentage of shares acquired								15.00%
Consideration per share (in dollars per share) \| $ / shares								$ 0.91
Additional share price (in dollars per share) \| $ / shares							$ 1.00
FNL
Long-term Investments
Issuance of shares of Ideanomics common stock to investee (in shares) \| shares					100,000
Received share of common stock (in shares) \| shares					600,000
Equity conversion of common stock (in shares) \| shares					30,902
FNL \| Common Stock
Long-term Investments
Subscription price (in dollars per share) \| $ / shares					$ 8.09
Amount converted for future equity					$ 250,000
FNL \| Cash
Long-term Investments
Equity method investments					$ 2,900,000
Solectrac
Long-term Investments
Number of shares acquired (in shares) \| shares							1,300,000
Payments to acquire investment								$ 1,300,000
Equity method investment, ownership percentage										24.30%
Energica Investment
Long-term Investments
Payments to acquire investment						$ 13,600,000												€ 10.1
Equity method investment, ownership percentage						20.00%												20.00%
Common stock issued through equity method (in shares) \| shares						6,100,000
Subscription price (in dollars per share) \| (per share)						$ 2.21												€ 1.78
Share selling, restriction period						90 days
Investment net assets									$ 10,900,000
Aggregate market value of shares owned									22,500,000
MDI Fund
Long-term Investments
Payments to acquire investment			$ 25,000,000
Equity method investments									3,945,000				3,765,000
Initial investment			$ 600,000						$ 121,000
TM2
Long-term Investments
Equity method investment, ownership percentage									10.00%
Number of board of director seats \| seat									1
TM2 \| Non Marketable Equity Investments
Long-term Investments
Payments to acquire investment											$ 5,900,000				€ 5.0				$ 1,800,000	€ 1.5
Increase in investment											4,100,000	€ 3.5
Equity financing threshold											$ 6,800,000				€ 5.0
Pre-investment valuation																					$ 11,100,000	€ 10.0
Current investment valuation																					$ 12,500,000	€ 11.0
PEA
Long-term Investments
Equity method investment, ownership percentage														30.00%
Equity method investments									$ 8,989,000				$ 9,138,000
Initial investment	$ 9,100,000	€ 7.5
Preferred shares (in shares) \| shares	11,175	11,175