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Summary of Significant Accounting and Reporting Policies (Narrative) (Details) |  | 12 Months Ended
--- | --- | ---
Jun. 03, 2022 USD ($) | Dec. 31, 2022 USD ($) plan shares | Dec. 31, 2021 USD ($) shares | Dec. 31, 2020 USD ($) shares
Summary Of Significant Accounting And Reporting Policies [Line Items] |  |  |  |
Initial investment in Argil |  | $ 48,400,000 | $ 0 |
Equity securities, FV-NI |  |  | 11,100,000 |
Purchase of equity method investments |  | 33,830,274 | 0 | $ 0
Common stock issued, value | $ 5,000,000 | 14,050,160 | 14,186,450 |
Equity method investments |  | 48,425,978 | 0 |
Short-term investments |  | 23,007,385 | 5,423,612 |
Long-term investments |  | 153,906,005 | 207,693,147 |
Allowance for obsolete and slow moving inventories |  | 10,000,000 | 10,900,000 |
Depreciation expense |  | 74,900,000 | 76,800,000 | 82,400,000
Account payable, capital expenditures |  | 14,600,000 | 9,800,000 | 4,800,000
Advertising and promotional costs |  | 3,300,000 | 1,800,000 | 2,000,000
Repair and maintenance of plant and equipment |  | $ 27,900,000 | $ 24,200,000 | $ 22,600,000
Operating lease, liability, statement of financial position |  | Patents and other assets, net |  |
Weighted average remaining lease term |  | 2 years |  |
Weighted average discount rate |  | 5.20% |  |
Number of shares related to stock plans not included in diluted average common shares outstanding because their effect would be antidilutive | shares |  | 1,842,602 | 200,037 | 403,071
Short-term Investments |  |  |  |
Summary Of Significant Accounting And Reporting Policies [Line Items] |  |  |  |
Short-term investments |  | $ 3,800,000 |  |
Long-Term Investments |  |  |  |
Summary Of Significant Accounting And Reporting Policies [Line Items] |  |  |  |
Long-term investments |  | 13,300,000 | $ 16,800,000 |
Gentex Corporation |  |  |  |
Summary Of Significant Accounting And Reporting Policies [Line Items] |  |  |  |
Equity method investments |  | $ 17,100,000 | $ 16,800,000 |
GreenMarbles |  |  |  |
Summary Of Significant Accounting And Reporting Policies [Line Items] |  |  |  |
Equity method investment, ownership percentage | 20.00% |  |  |
Purchase of equity method investments | $ 20,000,000 |  |  |
Employee Stock Option |  |  |  |
Summary Of Significant Accounting And Reporting Policies [Line Items] |  |  |  |
Number of plans | plan |  | 2 |  |
Employee Stock Purchase Plan |  |  |  |
Summary Of Significant Accounting And Reporting Policies [Line Items] |  |  |  |
Number of plans | plan |  | 2 |  |
Minimum |  |  |  |
Summary Of Significant Accounting And Reporting Policies [Line Items] |  |  |  |
Remaining lease term |  | 1 year |  |
Minimum | Gentex Corporation |  |  |  |
Summary Of Significant Accounting And Reporting Policies [Line Items] |  |  |  |
Equity method investment, ownership percentage |  | 20.00% |  |
Maximum |  |  |  |
Summary Of Significant Accounting And Reporting Policies [Line Items] |  |  |  |
Remaining lease term |  | 5 years |  |
Maximum | Gentex Corporation |  |  |  |
Summary Of Significant Accounting And Reporting Policies [Line Items] |  |  |  |
Equity method investment, ownership percentage |  | 50.00% |  |
Buildings and improvements | Minimum |  |  |  |
Summary Of Significant Accounting And Reporting Policies [Line Items] |  |  |  |
Minimum estimated useful life, in years |  | 7 years |  |
Buildings and improvements | Maximum |  |  |  |
Summary Of Significant Accounting And Reporting Policies [Line Items] |  |  |  |
Minimum estimated useful life, in years |  | 30 years |  |
Machinery and equipment | Minimum |  |  |  |
Summary Of Significant Accounting And Reporting Policies [Line Items] |  |  |  |
Minimum estimated useful life, in years |  | 3 years |  |
Machinery and equipment | Maximum |  |  |  |
Summary Of Significant Accounting And Reporting Policies [Line Items] |  |  |  |
Minimum estimated useful life, in years |  | 10 years |  |

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