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Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified | 6 Months Ended
--- | ---
Oct. 31, 2012 | Oct. 31, 2011
Cash flows from operating activities: |  |
Net income/(loss) | $ 38,971 | $ (802)
Adjustments to reconcile net income/(loss) to net cash provided by/(used in) operating activities: |  |
Amortization and depreciation | 8,074 | 7,881
Loss on sale of discontinued operations, including $45 of stock-based compensation expense (Note 12) | 798 |
Loss on sale/disposition of assets | 292 | 320
Provisions for/(recoveries of) losses on accounts receivable | 380 | (636)
Change in disposal group assets and liabilities | (1,232) | 5,005
Stock-based compensation expense | 1,906 | 1,124
Excess book deduction of stock-based compensation |  | (240)
Changes in operating assets and liabilities: |  |
Accounts receivable | (6,541) | 7,828
Inventories | (10,039) | (8,346)
Other current assets | (1,213) | (1,460)
Income tax receivable/payable | (9,062) | (1,417)
Accounts payable | (3,964) | (7,803)
Accrued payroll | (591) | 1,297
Accrued taxes other than income | 497 | (8,181)
Accrued profit sharing | (3,286) | 1,974
Accrued other expenses | (1,175) | (1,349)
Accrued product/municipal liability | (32) | (309)
Accrued warranty | (302) | 2,351
Other assets | (39) | (79)
Other non-current liabilities | 329 | 306
Net cash provided by/(used in) operating activities | 13,771 | (2,536)
Cash flows from investing activities: |  |
Proceeds from sale of discontinued operations (Note 3) | 7,500 |
Receipts from note receivable | 36 |
Payments to acquire patents and software | (22) | (64)
Proceeds from sale of property and equipment | 13 |
Payments to acquire property and equipment | (15,836) | (6,086)
Net cash used in investing activities | (8,309) | (6,150)
Cash flows from financing activities: |  |
Proceeds from loans and notes payable | 1,753 | 1,532
Cash paid for debt issue costs |  | (1,887)
Proceeds from energy efficiency incentive programs |  | 225
Payments on capital lease obligation | (300) |
Payments on loans and notes payable | (7,405) | (990)
Proceeds from exercise of options to acquire common stock, including employee stock purchase plan | 4,084 | 704
Excess tax benefit of stock-based compensation | 984 |
Net cash used in financing activities | (884) | (416)
Net increase/(decrease) in cash and cash equivalents | 4,578 | (9,102)
Cash and cash equivalents, beginning of period | 56,717 | 58,292
Cash and cash equivalents, end of period | 61,295 | 49,190
Cash paid for: |  |
Interest | 3,013 | 2,649
Income taxes | $ 22,204 | $ 1,129

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- Definition The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 16 -Subparagraph 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. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 15 -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 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3179-108585 + Details
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