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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified | 9 Months Ended
--- | ---
Jan. 31, 2013 | Jan. 31, 2012
Cash Flows from Operating Activities: |  |
Net loss | $ (40,946) | $ (28,461)
Adjustments to reconcile net loss to net cash provided by operating activities - |  |
Gain on disposal of discontinued operations, net |  | (725)
Gain on sale of property and equipment | (422) | (902)
Depreciation and amortization | 43,433 | 44,394
Depletion of landfill operating lease obligations | 7,358 | 6,570
Interest accretion on landfill and environmental remediation liabilities | 2,756 | 2,613
Loss on divestiture | 353 |
Development project charge |  | 131
Amortization of discount on second lien notes and senior subordinated notes | 568 | 712
Loss from equity method investments | 3,311 | 10,163
Impairment of equity method investment |  | 10,680
Loss on derivative instruments, net | 3,871 |
Loss on debt extinguishment | 15,584 |
Stock-based compensation and related severance expense | 1,840 | 1,307
Excess tax benefit on the vesting of share based awards | (98) | (254)
Deferred income taxes | (4,057) | 1,548
Changes in assets and liabilities, net of effects of acquisitions and divestitures - |  |
Accounts receivable | (1,544) | 6,882
Accounts payable | (110) | 2,753
Prepaid expenses, inventories and other assets | (686) | (758)
Accrued expenses and other liabilities | (685) | (6,911)
Net cash provided by operating activities | 30,526 | 49,742
Cash Flows from Investing Activities: |  |
Acquisitions, net of cash acquired | (25,106) | (2,102)
Additions to property, plant and equipment - acquisitions | (528) | (168)
Additions to property, plant and equipment - growth | (10,415) | (9,833)
Additions to property, plant and equipment - maintenance | (33,526) | (39,279)
Payment for capital related to divestiture | (618) |
Payments on landfill operating lease contracts | (5,726) | (6,052)
Proceeds from sale of property and equipment | 795 | 1,337
Investments in unconsolidated entities | (1,000) | (4,146)
Net cash provided by (used in) investing activities | (76,124) | (60,243)
Cash Flows from Financing Activities: |  |
Proceeds from long-term borrowings | 334,497 | 127,900
Principal payments on long-term debt | (320,483) | (119,433)
Payment of tender premium and costs on second lien notes | (10,743) |
Payments of financing costs | (4,572) | (142)
Net proceeds from the sale of Class A common stock | 42,184 |
Proceeds from the exercise of share based awards |  | 337
Excess tax benefit on the vesting of share based awards | 98 | 254
Contributions from noncontrolling interest holder | 1,195 | 174
Net cash provided by (used in) financing activities | 42,176 | 9,090
Discontinued Operations: |  |
Net cash provided by investing activities |  | 725
Net cash provided by discontinued operations |  | 725
Net decrease in cash and cash equivalents | (3,422) | (686)
Cash and cash equivalents, beginning of period | 4,534 | 1,817
Cash and cash equivalents, end of period | 1,112 | 1,131
Supplemental Disclosures of Cash Flow Information: |  |
Interest | 26,933 | 31,952
Income taxes, net of refunds | 97 | 5,314
Summary of entities acquired in purchase business combinations - |  |
Fair value of net assets acquired and goodwill | 27,936 | 2,284
Common stock issued | 2,650 |
Cash paid, net | 25,106 | 2,102
Holdbacks to sellers | 180 | 182
Equipment contributed by noncontrolling interest holder |  | $ 1,270

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