Goodwill and Other Intangible Assets - Schedule of Intangible Assets (Details) - USD ($)	Sep. 30, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Intangible assets, net	$ 204,885,910	$ 219,360,910	[1]
HomeLink® Trade Names and Trademarks
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	52,000,000	52,000,000
HomeLink® Trade Names and Trademarks | Guardian Optical Technologies
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	1,300,000	1,300,000
Exclusive Licensing Agreement
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	96,000,000	96,000,000
In Process Research and Development | Vaporsens In-Process R&D
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	11,000,000	11,000,000
In Process Research and Development | Argil In-Process R&D
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	6,278,132	6,278,132
In Process Research and Development | Air-Craftglass In-Process R&D
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	1,507,778	1,507,778
In Process Research and Development | Guardian Optical Technologies
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	6,800,000	6,800,000
Gentex Patents
Finite-Lived Intangible Assets [Line Items]
Gross	39,170,904	40,653,851
Accumulated Amortization	(27,611,804)	(27,820,383)
Net	11,559,100	12,833,468
HomeLink® Technology
Finite-Lived Intangible Assets [Line Items]
Gross	180,000,000	180,000,000
Accumulated Amortization	(150,000,000)	(138,750,000)
Net	$ 30,000,000	$ 41,250,000
Assumed Useful Life	12 years	12 years
Existing Customer Platforms
Finite-Lived Intangible Assets [Line Items]
Gross	$ 43,000,000	$ 43,000,000
Accumulated Amortization	(43,000,000)	(39,775,000)
Net	$ 0	$ 3,225,000
Assumed Useful Life	10 years	10 years
Total Other Intangible Assets
Finite-Lived Intangible Assets [Line Items]
Accumulated Amortization	$ (193,000,000)	$ (178,525,000)
Intangible assets, gross	397,885,910	397,885,910
Intangible assets, net	204,885,910	219,360,910
Total Patents & Other Intangible Assets
Finite-Lived Intangible Assets [Line Items]
Total Patents & Other Intangible Assets, Gross	437,056,814	438,539,761
Total Patents & Other Intangible Assets, Accumulated Amortization	(220,611,804)	(206,345,383)
Total Patents & Other Intangible Assets, Net	$ 216,445,010	$ 232,194,378

[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.