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Stock Plans - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended		12 Months Ended
	Dec. 15, 2019	Jul. 31, 2017	May 31, 2017	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Fully vested option to purchase shares of common stock				0	0
Share-based compensation expense				$ 55,013	$ 20,471	$ 20,188
Total income tax benefit recognized for all share-based compensation awards				10,915	2,141	4,007
Tax benefits realized from options exercised and RSUs and PSUs vested				8,426	$ 2,840	$ 30,268
Compensation costs capitalized				0
Total unrecognized compensation cost related to inducement option, stock options, RSUs and PSUs granted				$ 34,462
Compensation expense recognition period				1 year 4 months 24 days
Options outstanding, exercise price, lower range				$ 3.97	$ 3.97	$ 3.97
Options outstanding, exercise price, upper range				$ 63.59	$ 63.59	$ 63.59
Total intrinsic value of vesting options exercised				$ 24,841	$ 1,105	$ 105,647
Cash received from options exercised				$ 8,176	$ 1,076	$ 33,385
Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected term				7 years
Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected term				7 years
Granted				$ 19.40	$ 19.09	$ 63.91
Other than options, total fair value				$ 15,015	$ 12,268	$ 8,484
Other than options, granted				1,223,000
Vested				495,000
Vested				$ 30.39
Performance-based Stock Unit
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted				$ 28.09	$ 17.51	$ 80.18
Other than options, total fair value				$ 3,443	$ 2,891
Other than options, granted		47,900	98,500		280,100	81,300		289,900
Performance period (years)							3 years
Applicable achievement percentage						166.67%	166.67%
Vested				122,600	219,300	0
Net debt to EBITDA ratio								450.00%
Debt ratio achievement percentage								166.67%
Vested				$ 28.09	$ 17.51	$ 80.18
Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected term				5 years 10 months 24 days
Minimum \| Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock units, vesting period				2 years	2 years	2 years
Stock option awards, expiration period				7 years
Minimum \| Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock units, vesting period				2 years
Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected term				6 years 6 months
Maximum \| Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock units, vesting period				4 years	4 years	4 years
Stock option awards, expiration period				10 years
Maximum \| Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock units, vesting period				4 years
Ms Winfrey
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Fully vested option to purchase shares of common stock	3,276,000			3,874,000
Share-based compensation expense				$ 55,013	$ 20,471	$ 20,188
Weighted-average grant-date fair value of vesting options granted				$ 9.98	$ 0.00	$ 0.00
Stock Incentive Plan 2014
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stocks to be purchased through options				8,500,000
Share based compensation, fully-vested shares granted				31,000	29,000	11,000
Share based compensation, value of fully-vested shares granted				$ 688	$ 756	$ 754