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Costs incurred and estimated earnings net of billings on uncompleted contracts | 12 Months Ended
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Mar. 31, 2012
Costs incurred and estimated earnings net of billings on uncompleted contracts [Abstract] |
Costs incurred and estimated earnings net of billings on uncompleted contracts | 8. Costs incurred and estimated earnings net of billings on uncompleted contracts
|  | March 31, 2012 |  |  |  |  | March 31, 2011 |
Costs incurred and estimated earnings on uncompleted contracts |  |  | $587,220 |  |  |  |  |  | $946,482 |
Less billings to date |  |  | (509,511 | ) |  |  |  |  | (845,547 | )
|  |  | $77,709 |  |  |  |  |  | $100,935 |
Costs incurred and estimated earnings net of billings on uncompleted contracts is presented in the Consolidated Balance Sheets under the following captions:
|  | March 31, 2012 |  |  |  |  | March 31, 2011 |
Unbilled revenue |  |  | $86,859 |  |  |  |  |  | $102,939 |
Billings in excess of costs incurred and estimated earnings on uncompleted contracts |  |  | (7,514 | ) |  |  |  |  | (2,004 | )
|  |  | $79,345 |  |  |  |  |  | $100,935 |
Unbilled revenue related to non-construction activities amounted to $1,636 (March 31, 2011– $nil). An amount of $18,080 (March 31, 2011 – $72,025) is recognized within unbilled revenue relating to a single long-term customer contract, whereby the normal operating cycle for this project is greater than one year. As described in Note 2(b) the estimated balances within unbilled revenue are subject to uncertainty concerning ultimate realization.

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- Definition The entire disclosure for long-term contracts or programs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3(c)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 912 -SubTopic 405 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6471944&loc=d3e56414-109416 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 45 -Paragraph 12, 15, 16 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(d)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 81-1 -Paragraph 94 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 35 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6407836&loc=d3e58033-111643 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Chapter 11 -Section A -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 912 -SubTopic 275 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6471736&loc=d3e54651-109401 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Chapter 11 -Section B -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3, 6 -Article 5 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Chapter 11 -Section C -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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