Note 12 - Derivative Financial Instruments (Tables)

9 Months Ended

Feb. 29, 2016

Notes Tables

Schedule of Interest Rate Derivatives [Table Text Block]

	As of
	February 29, 2016			May 31, 2015
Interest rate swaps (included in other liabilities)	$	(269	)		(686	)

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

	Three Months Ended						Nine Months Ended
Location of (loss) gain reclassified from AOCI into income	February 29 2016			February 28 2015			February 29 2016			February 28 2015
(Losses) gains on cash flow hedges:
Interest expense (effective portion)	$	(121	)		(207	)		(489	)		(693	)
Interest income (expense) (ineffective portion)	$	-			-			(1	)		(2	)