Common stock and related derivatives shares sold.

No definition available.

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- Definition

Distribution of shares by sponsor subject to certain founder share restrictions.

+ References

No definition available.

+ Details

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- Definition

Number of shares issued by sponsor.

+ References

No definition available.

+ Details

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- Definition

The aggregate amount of income from investments (for example, dividends) not considered a component of the entity's core operations.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.7)
-URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227

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- Definition

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.

+ References

No definition available.

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- Definition

Amount of realized gain (loss) on investment in marketable security, including other-than-temporary impairment (OTTI).

+ References

No definition available.

+ Details

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- Definition

Amount of unrealized gain (loss) on investment in marketable security.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(7)(c))
-URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227

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Marketable Securities - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Marketable Securities [Line Items]
Investment income	$ 45,000	$ 127,000
Realized gain or (loss) on marketable securities		0
Unrealized gain on marketable securities	789,000	$ 127,000
IronNet [Member]
Marketable Securities [Line Items]
Realized gain or (loss) on marketable securities	$ (744,000)
Common stock and related derivatives shares sold	50,000
Unrealized gain on marketable securities	$ 775,000
IronNet [Member] \| IronNet [Member] \| Common Stock [Member]
Marketable Securities [Line Items]
Distribution of shares by sponsor subject to certain founder share restrictions			1,250,000
IronNet [Member] \| IronNet [Member] \| Put Options \| Common Stock [Member]
Marketable Securities [Line Items]
Shares issued by sponsor	250,000		300,000