Intangible Assets Subject to Amortization and Amortization Expense (Detail) (USD $) In Thousands, unless otherwise specified	Nov. 30, 2013	Jun. 01, 2013
Finite-Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets Gross	$ 1,045	$ 1,023
Finite Lived Intangible Assets Accumulated Amortization	164	115
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets Gross	29	29
Finite Lived Intangible Assets Accumulated Amortization	13	8
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets Gross	969	947
Finite Lived Intangible Assets Accumulated Amortization	141	101
Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets Gross	47	47
Finite Lived Intangible Assets Accumulated Amortization	$ 10	$ 6