|
10. CAPITAL STOCK (Details 2) (USD $)
In Thousands, except Share data, unless otherwise specified |
12 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|
|
May 31, 2014
|
May 31, 2013
|
May 31, 2012
|
May 31, 2011
|
May 31, 2014
$0.59-$0.97
|
May 31, 2014
$1.09-$1.42
|
May 31, 2014
$1.73-$1.95
|
May 31, 2014
$2.15-$2.68
|
May 31, 2014
$0.59-$2.68
|
|
| Number of Options Outstanding, Ending | 3,002 | 2,956 | 2,957 | 2,083 | 871 | 1,432 | 460 | 239 | 3,002 |
| Weighted Average Remaining Contractual Life (Years) Options Outstanding | 4 years 4 days | 4 years 10 months 13 days | 2 years 9 months 18 days | 5 years 3 months 25 days | 4 years 3 months 25 days | ||||
| Weighted Average Exercise Price Outstanding, Ending | $ 1.31 | $ 1.79 | $ 2.40 | $ 3.40 | $ 0.73 | $ 1.28 | $ 1.88 | $ 2.54 | $ 1.31 |
| Options exercisable and expected to be exercisable | 702 | 661 | 384 | 145 | 1,892 | ||||
| Weighted Average Exercise Price Exercisable | $ 0.77 | $ 1.28 | $ 1.91 | $ 1.33 | $ 1.22 | ||||
| Weighted Average Remaining Contractual Life (Years) Options Exercisable | 3 years 10 months 13 days | 4 years 3 months 4 days | 2 years 2 months 19 days | 4 years 5 months 8 days | 3 years 8 months 19 days | ||||
| Aggregate Intrinsic Value | $ 1,835 | ||||||||