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Acquisitions and Goodwill - Allocation of Purchase Price (Detail) - USD ($)
$ in Thousands
May. 30, 2015
Feb. 28, 2015
May. 31, 2014
Mar. 01, 2014
Business Acquisition [Line Items]        
Goodwill $ 44,187 $ 34,719 $ 29,458 $ 25,608
Individually Immaterial Acquisitions        
Business Acquisition [Line Items]        
Goodwill 8,816 9,719    
Tangible assets, net of liabilities 115 1,699    
Total purchase price $ 8,931 $ 11,418