Fair Value Measurements - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	Aug. 30, 2014 acquisition liability
Fair Value Disclosures [Abstract]
Number of Liabilities Measured at Fair Value on a Recurring Basis Related to Contingent Consideration For Acquisitions	2
Number of Acquisitions With Contingent Consideration Related to Liabilities Measured At Fair Value on a Recurring Basis	2
Contingent consideration estimated fair value	$ 0.8

Amount of liability recognized arising from contingent consideration in a business combination.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 25

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 35

-Paragraph 1

-Subparagraph b

-URI http://asc.fasb.org/extlink&oid=6911338&loc=d3e6819-128478

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