Revenue - Digital-only Subscription Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 29, 2020	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Total revenues	$ 443,636	$ 439,062
Print Subscription
Disaggregation of Revenue [Line Items]
Total revenues	155,424	160,951
News Products
Disaggregation of Revenue [Line Items]
Total revenues	118,958	102,346
Other Products
Disaggregation of Revenue [Line Items]
Total revenues	11,052	7,513
Total subscription revenues
Disaggregation of Revenue [Line Items]
Total revenues	285,434	270,810
Digital
Disaggregation of Revenue [Line Items]
Total revenues	$ 130,010	$ 109,859