Note 9. Accrued Expenses And Other Current Liabilities (Detail) - Accrued Expenses And Other Current Liabilities (USD $) In Thousands, unless otherwise specified	May 31, 2012	May 31, 2011
Accrued interest and interest rate swap liability	$ 21,815
Salaries and wages	11,997	11,912
Sales and other taxes payable	4,731	4,620
Other accruals	1,276	1,166
Professional fees and dealer commission	905	1,095
Royalties	407	253
Accruals for pricing discounts to dealers	225	189
Current portion of deferred leasehold improvement incentive		1,096
Accrued expenses and other current liabilities	$ 41,356	$ 20,331