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Investments (Narrative) (Details) - USD ($) | Jun. 30, 2023 | Mar. 09, 2023 | Dec. 31, 2022
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Equity method investments |  | $ 21,500,000 |  |
Short-term investments | $ 20,172,297 |  | $ 23,007,385 | [1]
Long-term investments | 239,621,466 |  | 202,331,983 | [1]
Adasky, LTD |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Equity method investment, ownership percentage |  | 15.00% |  |
Long-term Investments |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Equity securities, FV-NI | 94,000,000 |  | 69,500,000 |
Long-term investments | 91,800,000 |  | 65,700,000 |
Short-Term Investments |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Short-term investments | $ 2,200,000 |  | $ 3,800,000 |
Minimum | Gentex Corporation |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Equity method investment, ownership percentage | 20.00% |  |  |
Maximum | Gentex Corporation |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Equity method investment, ownership percentage | 50.00% |  |  |
[1] | The condensed consolidated balance sheet at December 31, 2022 has been derived from the audited consolidated financial statements at that date, but does not include all of the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements.

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