Organization and Significant Accounting Policies - Summary of Restricted Stock Unit and Restricted Stock Award Activity (Detail) - Restricted Stock Unit and Restricted Stock Award [Member] $ in Thousands	6 Months Ended
	Jun. 30, 2017 USD ($) shares	Dec. 30, 2016 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested restricted stock units and restricted stock awards, Number of Shares, Beginning balance	1,757,507
Granted, Number of Shares	346,750
Vested, Number of Shares	(610,092)
Forfeited, Number of Shares	(41,327)
Unvested restricted stock units and restricted stock awards, Number of Shares, Ending balance	1,452,838
Vested and expected to vest restricted stock units and restricted stock awards, Number of Shares	1,222,726
Unvested restricted stock units and restricted stock awards, Aggregate Intrinsic Value | $	$ 26,256	$ 16,466
Vested and expected to vest restricted stock units and restricted stock awards, Aggregate Intrinsic Value | $	$ 21,942