10. CAPITAL STOCK (Tables)

12 Months Ended

May 31, 2013

Capital Stock Tables

Stock option transactions

In Thousands, except per share data

		Outstanding Options
			Weighted
		Number	Average	Aggregate
	Available	of	Exercise	Intrinsic
	Shares	Shares	Price	Value
Balances, May 31, 2010........	998	1,949	$3.88	$833
Options granted.............	(508)	508	$1.88
Options terminated..........	327	(327)	$4.30
Plan shares expired.........	(130)	--
Options exercised...........	--	(47)	$0.85
Balances, May 31, 2011........	687	2,083	$3.40	$298
Additional shares reserved..	1,199	--
Options granted.............	(1,141)	1,141	$0.92
Options terminated..........	258	(258)	$3.72
Plan shares expired.........	(164)	--
Options exercised...........	--	(9)	$0.85
Balances, May 31, 2012........	839	2,957	$2.40	$587
Additional shares reserved..	1,223	--
Options granted.............	(670)	670	$1.13
Options terminated..........	569	(569)	$4.37
Plan shares expired.........	(224)	--
Options exercised...........	--	(102)	$0.67
Balances, May 31, 2013........	1,737	2,956	$1.79	$964
Options exercisable and expected to be
exercisable at May 31, 2013		2,897	$1.79	$945

Options Outstanding

In Thousands, except per share data

	Options Outstanding			Options Exercisable
	at May 31, 2013			at May 31, 2013
Range of Exercise Prices	Number Outstanding Shares	Weighted Average Remaining Contractual Life (Years)	Weighted Average Exercise Price	Number Exercisable Shares	Weighted Average Exercise Price	Weighted Average Remaining Contractual Life (Years)		Aggregate Intrinsic Value
$0.59-$0.97	1,165	4.20	$0.76	873	$0.81	3.71
$1.09-$1.95	1,331	4.37	$1.44	630	$1.54	3.60
$2.15-$2.52	252	0.80	$2.24	237	$2.25	0.72
$8.45-$9.94	208	0.10	$9.26	208	$9.26	0.10
$0.59-$9.94	2,956	3.70	$1.79	1,948	$2.12	2.92	$614