Summary of Option Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Dec. 28, 2019	Dec. 29, 2018
Shares
Beginning Balance	3,789,000
Granted	0	0
Exercised	(74,000)
Cancelled	(15,000)
Ending Balance	3,700,000	3,789,000
Exercisable at December 28, 2019	3,050,000
Weighted-Average Exercise Price
Beginning Balance	$ 21.69
Granted	0.00
Exercised	11.76
Cancelled	49.17
Ending Balance	21.77	$ 21.69
Exercisable at December 28, 2019	$ 16.61
Weighted-Average Remaining Contractual Life, Outstanding at December 29, 2018	5 years 3 months 18 days
Weighted-Average Remaining Contractual Life, Exercisable at December 29, 2018	5 years 4 months 24 days
Aggregate Intrinsic Value, Outstanding at December 29, 2018	$ 72,356
Aggregate Intrinsic Value, Exercisable at December 29, 2018	$ 71,614

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.