Subsequent Events (Details) - $ / shares		3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 26, 2021	Sep. 27, 2020	Sep. 26, 2021	Sep. 27, 2020
Subsequent Event [Line Items]
Dividends declared per share (in usd per share)		$ 0.07	$ 0.12	$ 0.14	$ 0.18
Class A Common Stock | Subsequent Event
Subsequent Event [Line Items]
Dividends declared per share (in usd per share)	$ 0.07
Class B Common Stock | Subsequent Event
Subsequent Event [Line Items]
Dividends declared per share (in usd per share)	$ 0.07