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CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
--- | ---
Apr. 30, 2013 | Apr. 30, 2012 | Apr. 30, 2011
Revenues | $ 455,335 | $ 467,950 | $ 454,685
Operating expenses: |  |  |
Cost of operations | 323,014 | 318,068 | 306,014
General and administration | 58,205 | 60,264 | 63,396
Depreciation and amortization | 56,576 | 58,415 | 58,121
Severance and reorganization costs | 3,709 |  |
Expense from divestiture, acquisition and financing costs | 1,410 |  |
Asset impairment charge |  | 40,746 | 3,654
Legal settlement |  | 1,359 |
Development project charge |  | 131 |
Environmental remediation charge |  |  | 549
Bargain purchase gain |  |  | (2,975)
Gain on sale of assets |  |  | (3,502)
Total operating expenses | 442,914 | 478,983 | 425,257
Operating income (loss) | 12,421 | (11,033) | 29,428
Other expense (income): |  |  |
Interest income | (141) | (42) | (54)
Interest expense | 41,570 | 45,008 | 45,543
Loss from equity method investments | 4,441 | 9,994 | 4,096
Impairment of equity method investment |  | 10,680 |
Loss on derivative instruments | 4,512 |  |
Loss on debt extinguishment | 15,584 | 300 | 7,390
Other income | (1,036) | (863) | (860)
Other expense, net | 64,930 | 65,077 | 56,115
Loss from continuing operations before income taxes and discontinued operations | (52,509) | (76,110) | (26,687)
(Benefit) provision for income taxes | (2,526) | 1,593 | (23,723)
Loss from continuing operations before discontinued operations | (49,983) | (77,703) | (2,964)
Discontinued operations: |  |  |
Loss from discontinued operations (net of income tax benefit of $0, $412 and $1,294) | (4,480) | (614) | (2,198)
Gain on disposal of discontinued operations (net of income tax provision of $0, $489 and $31,714) |  | 725 | 43,590
Net (loss) income | (54,463) | (77,592) | 38,428
Less: Net loss attributable to noncontrolling interests | (321) | (6) |
Net (loss) income attributable to common stockholders | (54,142) | (77,586) | 38,428
Amounts attributable to common stockholders: |  |  |
Loss from continuing operations before discontinued operations | (49,662) | (77,697) | (2,964)
Loss from discontinued operations, net of tax | (4,480) | (614) | (2,198)
Gain on disposal of discontinued operations, net of tax |  | 725 | 43,590
Net (loss) income attributable to common stockholders | $ (54,142) | $ (77,586) | $ 38,428
Weighted average common shares outstanding: |  |  |
Basic and diluted | 34,015 | 26,749 | 26,105
Basic and diluted earnings per share: |  |  |
Loss from continuing operations before discontinued operations | $ (1.46) | $ (2.90) | $ (0.12)
Loss from discontinued operations, net of tax | $ (0.13) | $ (0.02) | $ (0.08)
Gain on disposal of discontinued operations, net of tax |  | $ 0.02 | $ 1.67
Net (loss) income per common share | $ (1.59) | $ (2.90) | $ 1.47

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