Organization and Significant Accounting Policies - Summary of Restricted Stock Unit, Performance Stock Units and Restricted Stock Award Activity (Detail) - Restricted Stock Unit, Performance Stock Units and Restricted Stock Award [Member] $ in Thousands	6 Months Ended
	Jun. 28, 2019 USD ($) shares	Dec. 28, 2018 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested restricted stock units and restricted stock awards, Number of Shares, Beginning balance	1,777,379
Granted, Number of Shares	979,326
Vested, Number of Shares	(540,663)
Forfeited, Number of Shares	(55,496)
Unvested restricted stock units and restricted stock awards, Number of Shares, Ending balance	2,160,546
Vested and expected to vest restricted stock units and restricted stock awards, Number of Shares	1,797,789
Unvested restricted stock units and restricted stock awards, Aggregate Intrinsic Value | $	$ 30,075	$ 14,592
Vested and expected to vest restricted stock units and restricted stock awards, Aggregate Intrinsic Value | $	$ 25,025