| Schedule of Intangible Assets and Goodwill [Table Text Block] |
| |
|
June 30, |
|
|
March 31, |
|
| |
|
2012 |
|
|
2012 |
|
| In operation: |
|
|
|
|
|
|
| San Emidio, Nevada: |
|
|
|
|
|
|
| Geothermal water and mineral rights* |
$ |
4,825,220
|
|
$ |
4,825,220
|
|
| Less: accumulated amortization* |
|
(670,169
|
) |
|
(629,959
|
) |
| |
|
4,155,051
|
|
|
4,195,261
|
|
| |
|
|
|
|
|
|
| Inactive: |
|
|
|
|
|
|
| Raft River, Idaho: |
|
|
|
|
|
|
| Surface water rights |
|
849,862
|
|
|
849,862
|
|
| Geothermal water and mineral rights |
|
2,203,330
|
|
|
2,203,330
|
|
| |
|
|
|
|
|
|
| Granite Creek, Nevada |
|
|
|
|
|
|
| Surface water rights |
|
451,299
|
|
|
451,299
|
|
| |
|
|
|
|
|
|
| Neal Hot Springs, Oregon: |
|
|
|
|
|
|
| Geothermal water and mineral rights |
|
225,337
|
|
|
225,337
|
|
| |
|
|
|
|
|
|
| Guatemala City, Guatemala: |
|
|
|
|
|
|
| Geothermal water and mineral rights |
|
625,000
|
|
|
625,000
|
|
| |
|
|
|
|
|
|
| Gerlach, Nevada: |
|
|
|
|
|
|
| Geothermal water and mineral rights |
|
997,000
|
|
|
997,000
|
|
| |
|
|
|
|
|
|
| San Emidio, Nevada: |
|
|
|
|
|
|
| Surface water rights |
|
3,620,000
|
|
|
3,620,000
|
|
| Geothermal water and mineral rights* |
|
3,440,580
|
|
|
3,440,580
|
|
| Less: accumulated amortization* |
|
(430,073
|
) |
|
(430,073
|
) |
| |
|
11,982,335
|
|
|
11,982,335
|
|
| |
|
|
|
|
|
|
| |
$ |
16,137,386
|
|
$ |
16,177,596
|
|
|