Discontinued Operations, Assets Held for Sale, and Business Divestiture - Additional Information (Detail) $ in Thousands	Jan. 30, 2015 USD ($)
Discontinued Operations, Held-for-sale or Disposed of by Sale \| Repair Group
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash proceeds	$ 1,422

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration