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Common Stock and Treasury Stock - (Narrative) (Details)		3 Months Ended		9 Months Ended
	Aug. 19, 2022 Vote director shares	Sep. 30, 2024 USD ($) director shares	Sep. 30, 2023 shares	Sep. 30, 2024 USD ($) director Vote shares	Sep. 30, 2023 shares	Dec. 31, 2023 director
Common Stock
Number of board of directors | director		7		7		8
Shares retained for payment | shares		715		715
Vesting of restricted stock | $		$ 11,000		$ 11,000
Former Shareholder
Common Stock
Percentage of voting interest held	65.00%
Number of votes per share of common stock	10
Class A Common Stock
Common Stock
Number of votes per share of common stock				1
Percentage of directors to be elected				25.00%
Class A Common Stock | Former Shareholder
Common Stock
Number of directors elected | director	2
Estate Ownership Percentage	16.00%
Class A Common Stock | Stock Buy-Back Program
Common Stock
Share repurchase program, authorized amount | $		75,800,000		$ 75,800,000
Stock repurchase program, remaining authorization amount | $		$ 18,000,000.0		$ 18,000,000.0
Stock repurchased during period shares | shares			0		0
Class B Common Stock
Common Stock
Number of votes per share of common stock				10
Class B Common Stock | Former Shareholder
Common Stock
Number of votes per share of common stock	1
Common stock, shares issued (in shares) | shares	0

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Amount authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership.

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