Note 11 - Fair Value (Tables)

9 Months Ended

Feb. 28, 2013

Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques [Table Text Block]

	Fair Value at February 28, 2013
	Level 1		Level 2			Level 3
Derivatives:
Interest rate swaps (included in other liabilities)	$	-	$	(2,323	)	$	-

	Fair Value at May 31, 2012
	Level 1		Level 2			Level 3
Derivatives:
Interest rate swaps (included in other liabilities)	$	-	$	(2,198	)	$	-