Note 12 - Accumulated Other Comprehensive Loss (Tables)

9 Months Ended

Feb. 28, 2014

Note 12 - Accumulated Other Comprehensive Loss (Tables) [Line Items]

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

	As of
	February 28, 2014			May 31, 2013
Cumulative foreign currency translation adjustment	$	(11,719	)		(16,742	)
Change in fair value of cash flow hedges, net of tax		(926	)		(1,180	)
Accumulated other comprehensive loss	$	(12,645	)		(17,922	)

ALBERTA

Note 12 - Accumulated Other Comprehensive Loss (Tables) [Line Items]

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

	Pretax			Tax			After Tax
Nine Months Ended February 28, 2014
Foreign exchange translation adjustment	$	5,023			-			5,023
Changes in fair value of cash flow hedges		362			108			254
	$	5,385			108			5,277
Nine Months Ended February 28, 2013
Foreign exchange translation adjustment	$	3,563			-			3,563
Changes in fair value of cash flow hedges		(167	)		(45	)		(122	)
	$	3,396			(45	)		3,441