Note 12 - Fair Value Measurements - Carrying Amounts and Fair Values of Other Financial Instruments Not Measured on a Recurring Basis (Details) - Fair Value, Inputs, Level 2 [Member] - USD ($) $ in Thousands	Jun. 06, 2017	May 31, 2016
Long-term debt, fair value	$ 209,524	$ 223,212
Long-term debt, carrying amount	$ 213,491	$ 223,526