Schedule of Quarterly Financial Data (Parenthetical) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
Mar. 28, 2014	Sep. 26, 2014
Quarterly Financial Information Disclosure [Abstract]
Litigation settlement	$ 25,130	$ 25,130

Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees.

No definition available.

Name:	us-gaap_LitigationSettlementExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration