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Prepaid expenses and deposits | 12 Months Ended
--- | ---
Mar. 31, 2013
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] |
Prepaid expenses and deposits | Prepaid expenses and deposits
Current: |  |  |  |
|  | March 31, 2013 |  |  | March 31, 2012 |
Prepaid insurance and property taxes |  | $ | 793 |  |  | $ | 1,257 |
Prepaid lease payments |  | 1,408 |  |  | 4,624 |
Prepaid interest |  | 297 |  |  | 434 |
|  | $ | 2,498 |  |  | $ | 6,315 |
Long term: |  |  |  |
|  | March 31, 2013 |  |  | March 31, 2012 |
Prepaid lease payments (note 13(a)) |  | $ | 764 |  |  | $ | 895 |

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