Equity - Additional Information (Detail) - USD ($) $ in Millions	Aug. 15, 2018	Dec. 28, 2019	Nov. 21, 2013
Equity [Abstract]
Stock repurchase authorized amount	$ 40.0		$ 30.0
Increase in stock repurchase program	$ 10.0
Stock repurchase remained available for future stock repurchase		$ 10.8

Amount remaining of a stock repurchase plan authorized.

No definition available.

Name:	us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant