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Revenue - Schedule of Revenues Disaggregated by Segment (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 29, 2018 | Sep. 30, 2017 | Sep. 29, 2018 | Sep. 30, 2017
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenues, net | $ 365,765 | $ 323,687 | $ 1,183,735 | $ 994,422
North America |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenues, net | 255,281 | 223,677 | 819,007 | 695,397
Continental Europe |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenues, net | 72,394 | 60,665 | 236,518 | 179,580
United Kingdom |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenues, net | 25,356 | 25,473 | 84,850 | 75,907
Other |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenues, net | 12,734 | 13,872 | 43,360 | 43,538
Digital Subscription Revenues |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenues, net | 143,299 | 107,587 | 432,863 | 312,710
Digital Subscription Revenues | North America |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenues, net | 95,664 | 71,294 | 289,002 | 212,976
Digital Subscription Revenues | Continental Europe |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenues, net | 37,928 | 27,746 | 113,431 | 74,989
Digital Subscription Revenues | United Kingdom |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenues, net | 6,282 | 5,687 | 19,800 | 15,887
Digital Subscription Revenues | Other |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenues, net | 3,425 | 2,860 | 10,630 | 8,858
Digital + Studio Fees |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenues, net | 168,664 | 165,632 | 551,499 | 504,986
Digital + Studio Fees | North America |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenues, net | 125,282 | 122,441 | 408,200 | 376,106
Digital + Studio Fees | Continental Europe |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenues, net | 25,441 | 23,412 | 83,923 | 70,176
Digital + Studio Fees | United Kingdom |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenues, net | 12,619 | 13,306 | 41,552 | 39,448
Digital + Studio Fees | Other |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenues, net | 5,322 | 6,473 | 17,824 | 19,256
Service revenues, net |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenues, net | 311,963 | 273,219 | 984,362 | 817,696
Service revenues, net | North America |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenues, net | 220,946 | 193,735 | 697,202 | 589,082
Service revenues, net | Continental Europe |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenues, net | 63,369 | 51,158 | 197,354 | 145,165
Service revenues, net | United Kingdom |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenues, net | 18,901 | 18,993 | 61,352 | 55,335
Service revenues, net | Other |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenues, net | 8,747 | 9,333 | 28,454 | 28,114
Product sales and other, net |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenues, net | 53,802 | 50,468 | 199,373 | 176,726
Product sales and other, net | North America |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenues, net | 34,335 | 29,942 | 121,805 | 106,315
Product sales and other, net | Continental Europe |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenues, net | 9,025 | 9,507 | 39,164 | 34,415
Product sales and other, net | United Kingdom |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenues, net | 6,455 | 6,480 | 23,498 | 20,572
Product sales and other, net | Other |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |
Revenues, net | $ 3,987 | $ 4,539 | $ 14,906 | $ 15,424

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