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Costs incurred and estimated earnings net of billings on uncompleted contracts (Tables) | 12 Months Ended
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Mar. 31, 2013
Contractors [Abstract] |
Schedule of costs in excess of billings on uncompleted contracts |
|  | March 31, 2013 |  |  | March 31, 2012 |
Costs incurred and estimated earnings on uncompleted contracts |  | $ | 512,339 |  |  | $ | 587,220 |
Less billings to date |  | (463,241 | ) |  | (509,511 | )
|  | $ | 49,098 |  |  | $ | 77,709 |
Costs incurred and estimated earnings net of billings on uncompleted contracts is presented in the Consolidated Balance Sheets under the following captions:
|  | March 31, 2013 |  |  | March 31, 2012 |
Unbilled revenue |  | $ | 56,183 |  |  | $ | 86,859 |
Billings in excess of costs incurred and estimated earnings on uncompleted contracts |  | (7,085 | ) |  | (7,514 | )
|  | $ | 49,098 |  |  | $ | 79,345 |

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