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Equity Investment in Unconsolidated Subsidiary - Additional Information (Details) - USD ($) |  | 9 Months Ended |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Nov. 30, 2019 | Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Dec. 31, 2021 | Oct. 01, 2021 | Sep. 30, 2021 | Sep. 14, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2020
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Contribution to fund purchase of private warrants | $ 3,350,000 |  |  |  |  |  |  |  |  |  |
Proceeds from subscription of investment | $ 2,725,000 |  |  |  |  |  |  |  |  |  |
Common stock, shares outstanding (in shares) |  | 5,349,187 |  |  | 5,308,973 |  |  |  |  |  |
Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Common stock, shares outstanding (in shares) |  | 5,349,187 | 5,334,187 | 5,323,973 | 5,308,973 |  | 5,280,204 |  | 5,272,204 | 5,272,204 | 5,272,204
IronNet [Member] |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Common stock, shares outstanding (in shares) |  |  |  |  |  |  |  | 1,572,529 |  |  |
Warrant |  |  |  |  |  |  |  | 2,065,000 |  |  |
Warrants exercised |  |  |  |  |  | 2,065,000 |  |  |  |  |
IronNet [Member] | Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Common stock, shares outstanding (in shares) |  | 1,288,620 |  |  |  | 2,843,935 |  |  |  |  |
Common shares received upon exercise of warrants |  |  |  |  |  | 1,271,406 |  |  |  |  |
Shares disposed |  | 1,555,315 |  |  |  |  |  |  |  |  |
Received related proceeds of common stock |  | $ 20,200,000 |  |  |  |  |  |  |  |  |
Common stock, shares, value |  | $ 887,859 |  |  |  |  |  |  |  |  |

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