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Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Cash flows from operating activities: |  |  |
Net income | $ 173,553 | $ 121,887 | $ 129,437
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation and amortization | 76,650 | 83,003 | 71,564
Impairment of fixed assets | 0 | 48,551 | 0
Equity method earnings | 0 | (456) | (1,048)
Gain on step acquisition | 0 | (13,644) | 0
Loss on extinguishment of debt | 0 | 7,220 | 0
Foreign currency (gains)/losses | 3,829 | 16,381 | (3,014)
Stock-based compensation | 9,909 | 26,609 | 19,314
Deferred taxes | 1,965 | (14,929) | 39,213
Non-cash lease expense | 44,460 | 0 | 0
Changes in operating assets and liabilities: |  |  |
Accounts receivable | 2,746 | (10,453) | (103)
Inventories, net | 18,446 | (33,371) | 7,537
Prepaid expenses and other | (17,435) | (1,536) | 14,250
Other assets | (67,109) | 887 | (11,658)
Accounts payable | (7,184) | (9,164) | 6,834
Accrued expenses | (86,997) | (7,433) | 22,490
Other liabilities | 25,098 | (10,814) | 7,739
Net cash provided by operating activities | 177,931 | 202,738 | 302,555
Cash flows from investing activities: |  |  |
Purchases of property and equipment | (66,067) | (70,371) | (60,156)
Proceeds on investment sales | 11,160 | 11,536 | 11,269
Purchases of investments | (8,432) | (11,420) | (11,332)
Acquisitions (net of cash acquired) | (8,073) | (38,506) | (31,745)
Net cash used in investing activities | (71,412) | (108,761) | (91,964)
Cash flows from financing activities: |  |  |
Payment of cash dividends | (82,189) | (80,581) | (76,058)
Repurchase of shares of common stock | (825) | (69,565) | (71,731)
Exercise of employee stock options and taxes paid related to the net shares settlement of stock awards | (2,325) | 10,777 | 24,443
Payments on long-term debt | (214,455) | (552,500) | (103,226)
Payment of debt issuance costs | 0 | (7,243) | 0
Proceeds from long-term debt | 145,000 | 582,398 | 67,000
Net cash used in financing activities | (154,794) | (116,714) | (159,572)
Effect of exchange rate changes on cash | (3,006) | (16,751) | 18,134
Net increase (decrease) in cash and cash equivalents | (51,281) | (39,488) | 69,153
Cash and cash equivalents, beginning of period | 386,911 | 426,399 | 357,246
Cash and cash equivalents, end of period | $ 335,630 | $ 386,911 | $ 426,399

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- Definition Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585 + Details
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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585 + Details
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- Definition The cash outflow associated with the purchase of all investments (debt, security, other) during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585 + 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=118932676&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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585 + Details
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- Definition The cash inflow associated with the sale, maturity and collection of all investments such as debt, security and so forth during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3179-108585 + 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585 + Details
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- Definition Amount of noncash expense for share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 + Details
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