SHARE-BASED COMPENSATION (Tables)

6 Months Ended

Nov. 30, 2015

Summary of Transactions Involving Stock Units and Director Stock Grants

Transactions involving our stock units and director stock grants during the six months ended November 30, 2015 and 2014 are summarized below:

	Six Months Ended November 30, 2015					Six Months Ended November 30, 2014
	(unaudited)					(unaudited)
	No. of Stock Units			Weighted Average Fair Value		No. of Stock Units			Weighted Average Fair Value
	(in thousands)					(in thousands)
Stock and stock units, beginning of period		303		$	36.28		310		$	31.42
Changes during the period:
Granted		197		$	35.14		156		$	39.51
Vested and settled		(125	)	$	34.43		(129	)	$	29.18
Cancelled		(3	)	$	40.36		(9	)	$	32.10
Stock and stock units, end of period		372		$	36.26		328		$	36.14

Summary of Transactions Involving Performance Awards

Transactions involving our performance awards during the six months ended November 30, 2015 and 2014 are summarized below:

	Six Months Ended November 30, 2015					Six Months Ended November 30, 2014
	(unaudited)					(unaudited)
	No. of Performance Awards			Weighted Average Fair Value		No. of Performance Awards			Weighted Average Fair Value
	(in thousands)					(in thousands)
Performance awards, beginning of period		28		$	32.86		50		$	30.63
Changes during the period:
Granted		—		$	—		—		$	—
Vested and settled		(15	)	$	30.82		(22	)	$	27.66
Cancelled		—		$	—		—		$	—
Performance awards, end of period		13		$	35.15		28		$	32.86

Summary of Transactions Involving Stock Options

Transactions involving our stock options during the six months ended November 30, 2015 and 2014 are summarized below:

	Six Months Ended November 30, 2015					Six Months Ended November 30, 2014
	(unaudited)					(unaudited)
	No. of Options			Weighted Average Exercise Price		No. of Options			Weighted Average Exercise Price
	(in thousands)					(in thousands)
Shares under option, beginning of period		490		$	24.80		816		$	19.61
Changes during the period:
Granted		—		$	—		—		$	—
Exercised		(109	)	$	21.41		(124	)	$	10.40
Cancelled		—		$	—		—		$	—
Expired		—		$	—		—		$	—
Shares under option, end of period		381		$	25.77		692		$	21.26
Exercisable at end of period		381		$	25.77		692		$	21.26

Total Options Outstanding, Range of Exercise Prices and Remaining Contractual Lives

Options exercisable at November 30, 2015 had a weighted-average remaining contractual life of 1.6 years. For total options outstanding at November 30, 2015, the range of exercise prices and remaining contractual lives are as follows:

Range of Prices	No. of Options		Weighted Average Exercise Price		Weighted Average Remaining Life
	(in thousands)				(in years)
$9.63 to $12.82		30	$	12.63		0.8
$12.83 to $16.03		69	$	15.15		0.9
$16.04 to $32.05		282	$	29.79		1.8
		381	$	25.77		1.6

Long Term Performance Stock Unit Awards [Member]

Summary of Transactions Involving Performance Awards

Transactions involving our performance awards during the six months ended November 30, 2015 and 2014 are summarized below:

	Six Months Ended November 30, 2015				Six Months Ended November 30, 2014
	(unaudited)				(unaudited)
	No. of Stock Units		Weighted Average Fair Value		No. of Stock Units		Weighted Average Fair Value
	(in thousands)				(in thousands)
Long-term performance stock units, beginning of period		23	$	42.25		—	$	—
Changes during the period:
Granted		36	$	33.91		23	$	42.25
Vested and settled		—	$	—		—	$	—
Cancelled		—	$	—		—	$	—
Long-term performance stock units, end of period		59	$	37.16		23	$	42.25