Common Stock and Treasury Stock - (Narrative) (Details) $ in Millions		3 Months Ended		6 Months Ended
	Aug. 19, 2022 Vote director shares	Jun. 30, 2024 USD ($) director shares	Jun. 30, 2023 shares	Jun. 30, 2024 USD ($) Vote director shares	Jun. 30, 2023 shares	Dec. 31, 2023 director
Common Stock [Line Items]
Number of board of directors | director		7		7		8
Former Shareholder
Common Stock [Line Items]
Percentage of voting interest held	65.00%
Number of votes per share of common stock	10
Class A Common Stock
Common Stock [Line Items]
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 [Line Items]
Number of directors elected | director	2
Estate Ownership Percentage	16.00%
Class A Common Stock | Stock Buy-Back Program
Common Stock [Line Items]
Share repurchase program, authorized amount | $		$ 75.8		$ 75.8
Stock repurchase program, remaining authorization amount | $		$ 18.0		$ 18.0
Stock repurchased during period shares | shares		0	0	0	0
Class B Common Stock
Common Stock [Line Items]
Number of votes per share of common stock				10
Class B Common Stock | Former Shareholder
Common Stock [Line Items]
Number of votes per share of common stock	1
Common stock, shares issued (in shares) | shares	0