Long-Term Debt - Additional Information (Detail) (Senior Credit Agreement, USD $)	Jul. 31, 2013	Mar. 30, 2014 Amendment Agreement
Debt Instrument [Line Items]
Senior credit agreement, cumulative amount of incremental commitments available	$ 150,000,000	$ 300,000,000
Senior credit agreement, unsecured indebtedness leverage ratio		300.00%
Senior credit agreement, incurrence-based unsecured indebtedness leverage period		18 months

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

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