Changes in Stock (Details) - shares	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021	Dec. 31, 2020
Class of Stock [Line Items]
Common stock, shares issued (in shares)	4,753,000	4,138,000	4,138,000	3,136,000
Common Stock Class A [Member]
Class of Stock [Line Items]
Common stock, shares issued (in shares)	3,751,396		3,135,738
Stock Issued During Period, Shares, New Issues	22,000	0
Deferred Compensation Arrangement with Individual, Shares Issued	90,000	0
Stock Repurchased During Period, Shares	0	0
Treasury Stock, Shares, Acquired	615,000	0
Shares, Issued	53,757,000	52,766,000	53,170,000	52,654,000
Common Stock Class A [Member] | Stock Investment Plan
Class of Stock [Line Items]
Stock Issued During Period, Shares, New Issues	475,000	112,000
Common Stock Class B [Member]
Class of Stock [Line Items]
Common stock, shares issued (in shares)	1,001,714		1,001,714
Stock Issued During Period, Shares, New Issues	0	0
Deferred Compensation Arrangement with Individual, Shares Issued	0	0
Stock Repurchased During Period, Shares	0	0
Treasury Stock, Shares, Acquired	0	1,002,000
Shares, Issued	1,002,000	1,002,000	1,002,000	1,002,000
Common Stock Class B [Member] | Stock Investment Plan
Class of Stock [Line Items]
Stock Issued During Period, Shares, New Issues	0	0
Treasury stock [Member]
Class of Stock [Line Items]
Stock Issued During Period, Shares, New Issues	0	0
Deferred Compensation Arrangement with Individual, Shares Issued	0	0
Treasury stock [Member] | Stock Investment Plan
Class of Stock [Line Items]
Stock Issued During Period, Shares, New Issues	0	0