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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Cash flows from operating activities: |  |  |
Net income | $ 201,740 | $ 135,153 | $ 74,805
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation and amortization | 83,910 | 62,173 | 44,712
Deferred taxes | 39,499 | (41,351) | 13,801
Compensation expense related to share-based compensation plans | 13,480 | 9,873 | 8,479
Contingent consideration adjustment | (4,703) |  |
(Gain) loss on sale of assets | (1,007) | 441 | (573)
Excess tax benefits from share based compensation |  |  | (733)
Gain on Disposition | (132,448) |  |
Transaction costs for Disposition | (5,798) |  |
Changes in operating assets and liabilities: |  |  |
Restricted investments | 827 | (3,304) | 231
Accounts receivable, net | (31,475) | (84,775) | (87,629)
Prepaid taxes | 11,472 | (11,794) | 66
Prepaid expenses and other current assets | (1,750) | (7,543) | 1,099
Other assets | (8,029) | 56 | 570
Accounts payable | 5,521 | 59,037 | 35,709
Accrued expenses | 43,476 | (2,931) | 9,238
Non-current liabilities | (3,876) | 10,185 | 2,698
Net cash provided by operating activities | 210,839 | 125,220 | 102,473
Cash flows from investing activities: |  |  |
Proceeds from sale of equipment | 10,975 | 5,327 | 2,061
Purchases of property and equipment | (199,791) | (74,541) | (107,409)
Acquisitions, net of cash acquired | (248,656) | (165,933) |
Proceeds from the disposition of discontinued operations | 227,986 |  |
Net cash used in investing activities | (209,486) | (235,147) | (105,348)
Cash flows from financing activities: |  |  |
Proceeds from issuance of debt | 172,146 | 98,544 | 62,155
Repayments of long-term debt | (133,436) | (79,869) | (34,767)
Stock tendered for payments of withholding taxes | (4,270) | (3,412) | (2,489)
Purchase of treasury stock |  |  | (100,000)
Capital lease payments | (2,889) | (2,800) | (2,634)
Excess tax benefits from share based compensation |  |  | 372
Payment of debt issuance costs |  | (1,397) |
Net cash provided by (used in) financing activities | 31,551 | 11,066 | (77,363)
Effect of exchange rate changes on cash and cash equivalents | (26) | 14 | (107)
Net increase (decrease) in cash and cash equivalents | 32,878 | (98,847) | (80,345)
Cash and cash equivalents beginning of the year | 28,557 | 127,404 | 207,749
Cash and cash equivalents end of the year | 61,435 | 28,557 | 127,404
Supplemental disclosures of cash paid for: |  |  |
Interest | 9,677 | 6,162 | 3,665
Income taxes | $ 13,606 | $ 13,149 | $ 33,233

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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=109223946&loc=d3e3213-108585 + Details
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- Definition The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, 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 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585 + 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=109223946&loc=d3e3255-108585 + Details
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- Definition The cash inflow from sale of machinery and equipment. + 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 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585 + Details
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- Definition The cash outflow for the obligation for a lease meeting the criteria for capitalization (with maturities exceeding one year or beyond the operating cycle of the entity, 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=109223946&loc=d3e3291-108585 + 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=109223946&loc=d3e3291-108585 + 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://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=109223946&loc=d3e3602-108585 + Details
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- References No definition available. + Details
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