Subsequent Event (Details) - $ / shares	1 Months Ended	3 Months Ended								12 Months Ended
	Feb. 29, 2020	Dec. 29, 2019	Sep. 29, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 30, 2018	Sep. 30, 2018	Jul. 01, 2018	Apr. 01, 2018	Dec. 29, 2019	Dec. 30, 2018	Dec. 31, 2017
Subsequent Event [Line Items]
Dividends approved (in USD per share)		$ 0.05	$ 0.05	$ 0.05	$ 0.05	$ 0.04	$ 0.04	$ 0.04	$ 0.04	$ 0.20	$ 0.16	$ 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)	0.06
Class B Common Stock | Subsequent Event
Subsequent Event [Line Items]
Dividends approved (in USD per share)	$ 0.06