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Investments (Narrative) (Details) - USD ($) |  | 9 Months Ended |
--- | --- | --- | ---
Jun. 03, 2022 | Sep. 30, 2022 | Sep. 30, 2021 | Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Equity method investments |  | $ 39,700,000 |  | $ 0 |
Equity securities, FV-NI |  |  |  | 11,100,000 |
Purchase of equity method investments |  | 24,250,000 | $ 0 |  |
Common stock issued, value | $ 5,000,000 | 14,075,843 |  | 14,186,450 | [1]
Short-term investments |  | 16,122,519 |  | 5,423,612 | [1]
Long-term investments |  | 154,429,190 |  | 207,693,147 | [1]
GreenMarbles |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Purchase of equity method investments | $ 20,000,000 |  |  |  |
Short-Term Investments |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Short-term investments |  | 1,600,000 |  |  |
Long-term Investments |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Equity securities, FV-NI |  | 14,100,000 |  | 16,800,000 |
Long-term investments |  | $ 12,500,000 |  | $ 16,800,000 |
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, 2021 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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- Definition Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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