Note 11 - Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	May 31, 2016	May 31, 2015
Accrued salaries and wages	$ 13,075	$ 13,981
Sales and other taxes payable	2,626	3,584
Other accrued expenses	1,368	4,526
Royalty obligations	1,905	1,226
Pricing discount to dealers	440	446
Professional fees and dealer commissions	1,305	1,163
Medical claims liability	1,290	1,206
Accrued expenses and other current liabilities	$ 22,009	$ 26,132