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. 29, 2018 USD ($) shares	Dec. 29, 2017 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested restricted stock units and restricted stock awards, Number of Shares, Beginning balance	1,676,312
Granted, Number of Shares	299,960
Vested, Number of Shares	(629,192)
Forfeited, Number of Shares	(97,378)
Unvested restricted stock units and restricted stock awards, Number of Shares, Ending balance	1,249,702
Vested and expected to vest restricted stock units and restricted stock awards, Number of Shares	1,069,087
Unvested restricted stock units and restricted stock awards, Aggregate Intrinsic Value | $	$ 20,745	$ 38,706
Vested and expected to vest restricted stock units and restricted stock awards, Aggregate Intrinsic Value | $	$ 17,747