Segment and Geographic Data - Sources of Revenue and Other Information by Geographic Area (Detail) - USD ($) $ in Thousands	3 Months Ended									12 Months Ended
	Dec. 28, 2019		Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Dec. 29, 2018	Sep. 29, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 28, 2019		Dec. 29, 2018	Dec. 30, 2017
Revenues From External Customers And Long Lived Assets [Line Items]
Net revenue	$ 332,583		$ 348,567	$ 369,023	$ 363,164	$ 330,386	$ 365,765	$ 409,747	$ 408,223	$ 1,413,337		$ 1,514,121	$ 1,306,911
Long-lived assets	54,066	[1]				52,202				54,066	[1]	52,202	47,978
Operating lease assets	151,983					0				151,983		0
United States
Revenues From External Customers And Long Lived Assets [Line Items]
Net revenue										913,930		974,843	846,249
Long-lived assets	43,909	[1]				43,772				43,909	[1]	43,772	42,114
Operating lease assets	134,623									134,623
Canada
Revenues From External Customers And Long Lived Assets [Line Items]
Net revenue										65,372		72,408	64,100
Long-lived assets	4,997	[1]				4,825				4,997	[1]	4,825	2,563
Operating lease assets	9,270									9,270
Continental Europe
Revenues From External Customers And Long Lived Assets [Line Items]
Net revenue										293,233		304,325	239,223
Long-lived assets	2,374	[1]				1,257				2,374	[1]	1,257	642
Operating lease assets	4,490									4,490
United Kingdom
Revenues From External Customers And Long Lived Assets [Line Items]
Net revenue										94,557		107,072	99,989
Long-lived assets	2,068	[1]				1,924				2,068	[1]	1,924	1,920
Operating lease assets	2,533									2,533
Other
Revenues From External Customers And Long Lived Assets [Line Items]
Net revenue										46,245		55,473	57,350
Long-lived assets	718	[1]				$ 424				718	[1]	424	739
Operating lease assets	$ 1,067									1,067
Digital Subscription Revenues
Revenues From External Customers And Long Lived Assets [Line Items]
Net revenue										609,996		567,767	416,722
Studio + Digital Fees
Revenues From External Customers And Long Lived Assets [Line Items]
Net revenue										597,270		705,429	664,957
In-Workshop Product sales
Revenues From External Customers And Long Lived Assets [Line Items]
Net revenue										118,493		148,856	137,855
Licensing, Franchise Royalties and Other
Revenues From External Customers And Long Lived Assets [Line Items]
Net revenue										$ 87,578		$ 92,069	$ 87,377

[1] Amounts include finance lease assets