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Consolidated Statements Of Cash Flows - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Cash flows from operating activities: |  |  |
Net earnings | $ 499,478 | $ 516,361 | $ 494,150
Adjustments to reconcile net earnings to net cash provided by operating activities, net of acquisitions: |  |  |
Depreciation of property and equipment | 103,525 | 86,071 | 72,145
Gain on sale of property and equipment | (532) | (1,411) | (964)
Bad debt expense | 8,550 | 8,769 | 11,480
Deferred income taxes | 25,571 | 8,290 | 1,760
Stock-based compensation | 4,100 | 5,841 | 7,039
Excess tax benefits from stock-based compensation | (5,884) | (3,390) | (2,094)
Amortization of non-compete agreements | 527 | 527 | 527
Changes in operating assets and liabilities, net of acquisitions: |  |  |
Trade accounts receivable | (40,490) | (20,608) | (63,418)
Inventories | (80,853) | (47,830) | (87,622)
Other current assets | 29,138 | (15,778) | (7,510)
Accounts payable | (17,233) | 20,617 | 12,501
Accrued expenses | (28,721) | 11,141 | 25,263
Income taxes | 15,535 | (26,610) | 34,405
Other | 1,288 | 4,950 | 1,730
Net cash provided by operating activities | 513,999 | 546,940 | 499,392
Cash flows from investing activities: |  |  |
Purchases of property and equipment | (189,451) | (155,168) | (189,474)
Cash paid for acquisitions | 0 | (23,493) | (5,575)
Proceeds from sale of property and equipment | 6,505 | 9,941 | 5,819
Net decrease in marketable securities | 0 | 0 | 451
Other | (5,147) | (11,907) | (2)
Net cash used in investing activities | (188,093) | (180,627) | (188,781)
Cash flows from financing activities: |  |  |
Borrowings under debt obligations | 950,000 | 1,215,000 | 705,000
Payments against debt obligations | (920,000) | (955,000) | (615,000)
Proceeds from exercise of stock options | 29,272 | 19,099 | 7,697
Excess tax benefits from stock-based compensation | 5,884 | 3,390 | 2,094
Purchases of common stock | (59,440) | (292,951) | (52,942)
Payments of dividends | (346,588) | (327,101) | (296,581)
Net cash used in financing activities | (340,872) | (337,563) | (249,732)
Effect of exchange rate changes on cash and cash equivalents | (1,318) | (14,227) | (4,889)
Net (decrease) increase in cash and cash equivalents | (16,284) | 14,523 | 55,990
Cash and cash equivalents at beginning of year | 129,019 | 114,496 | 58,506
Cash and cash equivalents at end of year | 112,735 | 129,019 | 114,496
Supplemental disclosure of cash flow information: |  |  |
Cash paid for interest | 6,183 | 3,103 | 915
Net cash paid for income taxes | $ 248,329 | $ 327,034 | $ 257,514

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- Definition The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3213-108585 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 + Details
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- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + 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 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3213-108585 + Details
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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 -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585 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 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 -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3179-108585 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 + 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 -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: 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=66902209&loc=d3e3255-108585 Reference 3: 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 Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.5) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 2: 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=66902209&loc=d3e3602-108585 + 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=66902209&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=66902209&loc=d3e3602-108585 + Details
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- References No definition available. + Details
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