Subsequent Event (Details) - $ / shares	1 Months Ended	3 Months Ended								12 Months Ended
	Feb. 25, 2021	Dec. 27, 2020	Sep. 27, 2020	Jun. 28, 2020	Mar. 29, 2020	Dec. 29, 2019	Sep. 29, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 27, 2020	Dec. 29, 2019	Dec. 30, 2018
Subsequent Event [Line Items]
Dividends approved (in USD per share)		$ 0.06	$ 0.12	$ 0	$ 0.06	$ 0.05	$ 0.05	$ 0.05	$ 0.05	$ 0.24	$ 0.20	$ 0.16
Subsequent Event
Subsequent Event [Line Items]
Increase in dividend per share of common stock (in USD per share)	$ 0.01
Class A Common Stock | Subsequent Event
Subsequent Event [Line Items]
Dividends approved (in USD per share)	0.07
Class B Common Stock | Subsequent Event
Subsequent Event [Line Items]
Dividends approved (in USD per share)	$ 0.07