Marketable Securities - Details of Marketable Securities (Parenthetical) (Details) - IronNet [Member]	Dec. 31, 2021 shares
Common Shares - Restricted [Member]
Marketable Securities [Line Items]
Distribution of shares by sponsor	1,250,000
Common Shares - Unrestricted [Member]
Marketable Securities [Line Items]
Distribution of shares by sponsor	88,620

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.

No definition available.

Name:	us-gaap_MarketableSecuritiesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration