XML 41 R28.htm IDEA: XBRL DOCUMENT
v3.22.1

Marketable Securities (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2021
Investments Debt And Equity Securities [Abstract] |
Details of Marketable Securities | Details of marketable securities held at December 31, 2021 and 2020 are as follows (in thousands):
|  |  |  |  |  |  |  |  |  | Cumulative |
|  |  |  |  |  |  |  |  |  | Unrealized |
|  | Fair Value |  |  | Basis |  |  | (Loss) Gain |
IronNet: |  | December 31, 2021 |
1,250,000 common shares - restricted |  | $ | 4,734 |  |  | $ | 26,501 |  |  | $ | (21,767 | )
88,620 common shares - unrestricted |  |  | 372 |  |  |  | 2,195 |  |  |  | (1,823 | )
Put options |  |  | 1,245 |  |  |  | 489 |  |  |  | 756 |
|  |  | 6,351 |  |  |  | 29,185 |  |  |  | (22,834 | )
Equity fund and other securities |  |  | 9,816 |  |  |  | 9,808 |  |  |  | 8 |
|  | $ | 16,167 |  |  | $ | 38,993 |  |  | $ | (22,826 | )
|  | December 31, 2020 |
Equity fund and other securities |  |  | 5,791 |  |  |  | 5,668 |  |  |  | 123 |
|  | $ | 5,791 |  |  | $ | 5,668 |  |  | $ | 123 |

X
- References No definition available. + Details
Name: | us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of marketable securities. This may consist of investments in certain debt and equity securities, short-term investments and other assets. + References No definition available. + Details
Name: | us-gaap_MarketableSecuritiesTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration