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.