CONSOLIDATED STATEMENTS OF STOCKHOLDERS EQUITY - USD ($) $ in Millions	Class A Common Stock	Class B Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss.	Total
Balance at the beginning of the period at Dec. 31, 2022	$ 2.7	$ 0.6	$ 651.9	$ 795.3	$ (149.9)	$ 1,300.6
Balance (in shares) at Dec. 31, 2022	27,314,679	5,958,290
Increase (Decrease) in Stockholders' Equity
Net income				206.4		206.4
Other comprehensive income (loss)					(9.8)	(9.8)
Comprehensive income						196.6
Shares of Class A common stock issued upon the exercise of stock options			0.1			0.1
Shares of Class A common stock issued upon the exercise of stock options (in shares)	598
Stock-based compensation			14.5			14.5
Stock repurchase				(11.7)		(11.7)
Stock repurchase (in shares)	(68,569)
Net change in restricted and performance stock units			2.1	(15.8)		(13.7)
Net change in restricted and performance stock units (in shares)	128,316
Common stock dividends				(34.4)		(34.4)
Balance at the end of the period at Sep. 24, 2023	$ 2.7	$ 0.6	668.6	939.8	(159.7)	1,452.0
Balance (in shares) at Sep. 24, 2023	27,375,024	5,958,290
Balance at the beginning of the period at Jun. 25, 2023	$ 2.7	$ 0.6	663.6	890.3	(142.9)	1,414.3
Balance (in shares) at Jun. 25, 2023	27,388,423	5,958,290
Increase (Decrease) in Stockholders' Equity
Net income				65.8		65.8
Other comprehensive income (loss)					(16.8)	(16.8)
Comprehensive income						49.0
Stock-based compensation			5.0			5.0
Stock repurchase				(4.0)		(4.0)
Stock repurchase (in shares)	(22,013)
Net change in restricted and performance stock units				(0.2)		(0.2)
Net change in restricted and performance stock units (in shares)	8,614
Common stock dividends				(12.1)		(12.1)
Balance at the end of the period at Sep. 24, 2023	$ 2.7	$ 0.6	668.6	939.8	(159.7)	1,452.0
Balance (in shares) at Sep. 24, 2023	27,375,024	5,958,290
Balance at the beginning of the period at Dec. 31, 2023	$ 2.7	$ 0.6	674.3	979.1	(143.4)	1,513.3
Balance (in shares) at Dec. 31, 2023	27,352,701	5,958,290
Increase (Decrease) in Stockholders' Equity
Net income				223.6		223.6
Other comprehensive income (loss)					1.3	1.3
Comprehensive income						224.9
Shares of Class B common stock converted to Class A common stock (in shares)	5,000	(5,000)
Shares of Class A common stock issued upon the exercise of stock options (in shares)	364
Stock-based compensation			15.5			15.5
Stock repurchase				(13.0)		(13.0)
Stock repurchase (in shares)	(65,897)
Net change in restricted and performance stock units			2.3	(12.8)		(10.5)
Net change in restricted and performance stock units (in shares)	93,373
Common stock dividends				(41.1)		(41.1)
Balance at the end of the period at Sep. 29, 2024	$ 2.7	$ 0.6	692.1	1,135.8	(142.1)	1,689.1
Balance (in shares) at Sep. 29, 2024	27,385,541	5,953,290
Balance at the beginning of the period at Jun. 30, 2024	$ 2.7	$ 0.6	686.6	1,086.0	(157.7)	1,618.2
Balance (in shares) at Jun. 30, 2024	27,404,090	5,953,290
Increase (Decrease) in Stockholders' Equity
Net income				69.1		69.1
Other comprehensive income (loss)					15.6	15.6
Comprehensive income						84.7
Stock-based compensation			5.5			5.5
Stock repurchase				(4.9)		(4.9)
Stock repurchase (in shares)	(25,885)
Net change in restricted and performance stock units (in shares)	7,336
Common stock dividends				(14.4)		(14.4)
Balance at the end of the period at Sep. 29, 2024	$ 2.7	$ 0.6	$ 692.1	$ 1,135.8	$ (142.1)	$ 1,689.1
Balance (in shares) at Sep. 29, 2024	27,385,541	5,953,290