Summary of Estimated Fair Values of Assets Acquired and Liabilities Assumed Purchase Price Allocation (Detail) (USD $) In Thousands, unless otherwise specified	Jan. 15, 2013
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]
Accounts receivable	$ 10,327
Inventory	14,214
Property and equipment	2,812
Intangible assets	37,003
Other assets	2,018
Goodwill	28,693
Total assets acquired	95,067
Accounts payable	4,768
Accrued expenses	6,418
Deferred tax liabilities	315
Other liabilities assumed	913
Total liabilities assumed	12,414
Total net assets acquired	$ 82,653