Note 11 - Fair Value (Tables)

6 Months Ended

Nov. 30, 2012

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

				Fair Value at Reporting Date Using
Description	November 30, 2012			Level 1		Level 2			Level 3
Derivatives
Interest rate swaps (included in other liabilities)	$	(2,563	)	$	-	$	(2,563	)	$	-

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