Acquisitions and Goodwill - Additional Information (Detail) $ in Thousands	3 Months Ended	12 Months Ended
	May. 30, 2015 USD ($) acquisition Store	Feb. 28, 2015 USD ($) acquisition Store	May. 31, 2014 USD ($)	Mar. 01, 2014 USD ($)
Business Acquisition [Line Items]
Goodwill	$ 44,187	$ 34,719	$ 29,458	$ 25,608
Individually Immaterial Acquisitions
Business Acquisition [Line Items]
Number of acquisitions | acquisition	1	7
Purchase price to acquire entity	$ 8,931	$ 11,418
Contingent consideration estimated fair value		$ 700
Number of running stores | Store	4	20
Goodwill	$ 8,816	$ 9,719