Note 14 - Derivative Financial Instruments (Tables)

12 Months Ended

May 31, 2014

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Interest Rate Derivatives [Table Text Block]

	As of May 31
	2014			2013
Interest rate swaps (included in other liabilities)	$	(1,357	)		(1,906	)

Derivative Instruments, Gain (Loss) [Table Text Block]

	Twelve Months Ended
	2014			2013
Location of (loss) gain reclassified from AOCI into income
(Losses) gains on cash flow hedges:
Interest expense (effective portion)	$	(1,001	)		(1,017	)
Interest income (expense) (ineffective portion)	$	(10	)		(9	)