Schedule of Reconciliation of Company's Level 3 Contingent Consideration Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Nov. 30, 2013
Business Acquisition, Contingent Consideration [Line Items]
Balance as of August 31, 2013	$ 1,900
Level 3
Business Acquisition, Contingent Consideration [Line Items]
Balance as of March 2, 2013	1,453
Contingent consideration from acquisition	450
Balance as of August 31, 2013	$ 1,903