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Revenue - Schedule of Revenues Disaggregated by Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2019	Sep. 29, 2018	Sep. 28, 2019	Sep. 29, 2018
Disaggregation Of Revenue [Line Items]
Revenues, net	$ 348,567	$ 365,765	$ 1,080,754	$ 1,183,735
North America
Disaggregation Of Revenue [Line Items]
Revenues, net	243,684	255,281	749,341	819,007
Continental Europe
Disaggregation Of Revenue [Line Items]
Revenues, net	71,138	72,394	224,623	236,518
United Kingdom
Disaggregation Of Revenue [Line Items]
Revenues, net	22,933	25,356	72,068	84,850
Other
Disaggregation Of Revenue [Line Items]
Revenues, net	10,812	12,734	34,722	43,360
Digital Subscription Revenues
Disaggregation Of Revenue [Line Items]
Revenues, net	153,940	143,299	459,764	432,863
Digital Subscription Revenues | North America
Disaggregation Of Revenue [Line Items]
Revenues, net	101,579	95,664	303,190	289,002
Digital Subscription Revenues | Continental Europe
Disaggregation Of Revenue [Line Items]
Revenues, net	42,230	37,928	125,999	113,431
Digital Subscription Revenues | United Kingdom
Disaggregation Of Revenue [Line Items]
Revenues, net	6,608	6,282	20,019	19,800
Digital Subscription Revenues | Other
Disaggregation Of Revenue [Line Items]
Revenues, net	3,523	3,425	10,556	10,630
Studio + Digital Fees
Disaggregation Of Revenue [Line Items]
Revenues, net	144,101	168,664	458,771	551,499
Studio + Digital Fees | North America
Disaggregation Of Revenue [Line Items]
Revenues, net	108,338	125,282	342,896	408,200
Studio + Digital Fees | Continental Europe
Disaggregation Of Revenue [Line Items]
Revenues, net	20,644	25,441	68,274	83,923
Studio + Digital Fees | United Kingdom
Disaggregation Of Revenue [Line Items]
Revenues, net	10,733	12,619	33,493	41,552
Studio + Digital Fees | Other
Disaggregation Of Revenue [Line Items]
Revenues, net	4,386	5,322	14,108	17,824
Service Revenues, net
Disaggregation Of Revenue [Line Items]
Revenues, net	298,041	311,963	918,535	984,362
Service Revenues, net | North America
Disaggregation Of Revenue [Line Items]
Revenues, net	209,917	220,946	646,086	697,202
Service Revenues, net | Continental Europe
Disaggregation Of Revenue [Line Items]
Revenues, net	62,874	63,369	194,273	197,354
Service Revenues, net | United Kingdom
Disaggregation Of Revenue [Line Items]
Revenues, net	17,341	18,901	53,512	61,352
Service Revenues, net | Other
Disaggregation Of Revenue [Line Items]
Revenues, net	7,909	8,747	24,664	28,454
Product sales and other, net
Disaggregation Of Revenue [Line Items]
Revenues, net	50,526	53,802	162,219	199,373
Product sales and other, net | North America
Disaggregation Of Revenue [Line Items]
Revenues, net	33,767	34,335	103,255	121,805
Product sales and other, net | Continental Europe
Disaggregation Of Revenue [Line Items]
Revenues, net	8,264	9,025	30,350	39,164
Product sales and other, net | United Kingdom
Disaggregation Of Revenue [Line Items]
Revenues, net	5,592	6,455	18,556	23,498
Product sales and other, net | Other
Disaggregation Of Revenue [Line Items]
Revenues, net	$ 2,903	$ 3,987	$ 10,058	$ 14,906

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No definition available.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

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