Intangible Assets Subject to Amortization and Amortization Expense (Detail) (USD $) In Thousands, unless otherwise specified	Nov. 29, 2014	May 31, 2014
Finite-Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets Gross	$ 1,035	$ 1,053
Finite Lived Intangible Assets Accumulated Amortization	245	210
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets Gross	29	29
Finite Lived Intangible Assets Accumulated Amortization	23	18
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets Gross	959	977
Finite Lived Intangible Assets Accumulated Amortization	204	178
Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets Gross	47	47
Finite Lived Intangible Assets Accumulated Amortization	$ 18	$ 14