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Consolidated Statements of Operations and Comprehensive Loss (CAD) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
--- | ---
Mar. 31, 2013 | Mar. 31, 2012 | Mar. 31, 2011
Income Statement [Abstract] |  |  |
Revenue | 544,609 | 670,720 | 667,037
Project costs | 244,444 | 310,463 | 284,241
Equipment costs | 193,843 | 220,738 | 234,933
Equipment operating lease expense | 34,723 | 62,870 | 68,349
Depreciation | 37,722 | 44,642 | 35,062
Gross profit | 33,877 | 32,007 | 44,452
General and administrative expenses | 44,076 | 41,333 | 48,725
Loss on disposal of property, plant and equipment | 2,628 | 1,741 | 1,948
Loss (gain) on disposal of assets held for sale (note 10) | 98 | (466) | 825
Amortization of intangible assets (note 13(b)) | 3,694 | 4,287 | 2,150
Equity in (earnings) loss of unconsolidated joint venture (note 9) | (596) | (86) | 2,720
Operating (loss) income before the undernoted | (16,023) | (14,802) | (11,916)
Interest expense (note 22) | 23,743 | 22,146 | 22,533
Foreign exchange loss (gain) | 84 | 52 | (1,659)
Unrealized gain on derivative financial instruments (note 17(a)) | (2,705) | (2,382) | (2,305)
Loss on debt extinguishment (note 16(d)) | 0 | 0 | 4,346
Loss from continuing operations before income taxes | (37,145) | (34,618) | (34,831)
Income tax (note 11): |  |  |
Current (benefit) expense | (2,209) | (677) | 2,892
Deferred (benefit) | (6,627) | (8,558) | (7,997)
Net loss from continuing operations | (28,309) | (25,383) | (29,726)
Income (loss) from discontinued operations, net of tax (note 23) | 26,846 | 4,221 | (4,924)
Net loss | (1,463) | (21,162) | (34,650)
Other comprehensive income (loss) |  |  |
Unrealized foreign currency translation gain (loss) | 31 | 40 | (59)
Comprehensive loss | (1,432) | (21,122) | (34,709)
Per share information (note 19(b)) |  |  |
Net loss from continuing operations - basic and diluted (CAD per share) | (0.78) | (0.70) | (0.82)
Net income (loss) from discontinued operations - basic and diluted (CAD per share) | 0.74 | 0.12 | (0.14)
Net loss - basic and diluted (CAD per share) | (0.04) | (0.58) | (0.96)

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(2) -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 + Details
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