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v3.23.3

Stockholders' Equity and Restrictions - Changes in Stock (Details) - shares | 9 Months Ended
--- | ---
Sep. 30, 2023 | Sep. 30, 2022
Class of Stock [Line Items] |  |
Treasury Stock, Balance at beginning of year | 4,937,000 | 4,138,000
Treasury Stock, Balance at end of period | 5,262,000 | 4,753,000
Common Stock Class A [Member] |  |
Class of Stock [Line Items] |  |
Common Stock, Balance at beginning of year | 53,758,000 | 53,170,000
Treasury Stock, Balance at beginning of year | 3,935,581 |
Stock issued, new issues | 0 | 22,000
Stock issued for compensation | 122,000 | 90,000
Acquisition of Class A shares | 0 | 0
Treasury Stock, Shares, Acquired | 325,000 | 615,000
Common Stock, Balance at end of period | 53,880,000 | 53,757,000
Treasury Stock, Balance at end of period | 4,261,005 |
Common Stock Class A [Member] | Stock Investment Plan |  |
Class of Stock [Line Items] |  |
Stock issued, new issues | 0 | 475,000
Common Stock Class B [Member] |  |
Class of Stock [Line Items] |  |
Common Stock, Balance at beginning of year | 1,002,000 | 1,002,000
Treasury Stock, Balance at beginning of year | 1,001,714 |
Stock issued, new issues | 0 | 0
Stock issued for compensation | 0 | 0
Acquisition of Class A shares | 0 | 0
Common Stock, Balance at end of period | 1,002,000 | 1,002,000
Treasury Stock, Balance at end of period | 1,001,714 |
Common Stock Class B [Member] | Stock Investment Plan |  |
Class of Stock [Line Items] |  |
Stock issued, new issues | 0 | 0
Treasury Stock, Common [Member] |  |
Class of Stock [Line Items] |  |
Stock issued, new issues | 0 | 0
Stock issued for compensation | 0 | 0
Treasury Stock, Common [Member] | Stock Investment Plan |  |
Class of Stock [Line Items] |  |
Stock issued, new issues | 0 | 0

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