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