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Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Apr. 30, 2014 | Apr. 30, 2013 | Apr. 30, 2012
Cash flows from operating activities |  |  |
Net income | $ 126,820 | $ 103,814 | $ 114,694
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation and amortization | 131,160 | 111,823 | 96,552
Other amortization | 297 | 195 | 347
Stock-based compensation | 5,600 | 4,270 | 3,792
Loss on disposal of assets and impairment charges | 2,846 | 4,788 | 1,428
Deferred income taxes | 17,089 | 31,828 | 53,141
Excess tax benefits related to stock option exercises | (1,791) | (1,929) | (1,162)
Changes in assets and liabilities: |  |  |
Receivables | (4,941) | 800 | (1,546)
Inventories | (13,696) | (16,222) | (8,647)
Prepaid expenses | (82) | (98) | (118)
Accounts payable | 17,894 | 21,748 | (4,510)
Accrued expenses | 33,818 | 15,783 | 10,944
Income taxes receivable | (441) | 9,969 | 29,508
Other, net | (413) | (441) | 456
Net cash provided by operating activities | 314,160 | 286,328 | 294,879
Cash flows from investing activities |  |  |
Purchase of property and equipment | (308,633) | (305,301) | (240,874)
Payments for acquisitions of businesses, net of cash acquired | (31,584) | (29,527) | (39,444)
Proceeds from sales of property and equipment | 3,328 | 3,544 | 2,196
Net cash used in investing activities | (336,889) | (331,284) | (278,122)
Cash flows from financing activities |  |  |
Proceeds from long-term debt | 200,000 | 0 | 0
Repayments of long-term debt | (15,865) | (10,757) | (1,372)
Net (repayments) borrowings of short-term debt | (59,100) | 59,100 | (600)
Proceeds from exercise of stock options | 3,368 | 4,721 | 3,249
Payments of cash dividends | (27,095) | (24,685) | (22,849)
Excess tax benefits related to stock option exercises | 1,791 | 1,929 | 1,162
Net cash provided by (used in) financing activities | 103,099 | 30,308 | (20,410)
Net increase (decrease) in cash and cash equivalents | 80,370 | (14,648) | (3,653)
Cash and cash equivalents at beginning of year | 41,271 | 55,919 | 59,572
Cash and cash equivalents at end of year | 121,641 | 41,271 | 55,919
Cash paid (received) during the year for |  |  |
Interest, net of amount capitalized | 36,923 | 35,226 | 35,403
Income taxes | 50,031 | 17,973 | (17,973)
Noncash investing and financing activities |  |  |
Property and equipment acquired through notes payable and capitalized lease obligations | $ 1,169 | $ 981 | $ 191

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- Definition The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition The net cash inflow or outflow for borrowing having initial term of repayment within one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3098-108585 + Details
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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 Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: 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=31042434&loc=d3e3179-108585 + Details
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- Definition The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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