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v3.20.4

Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Cash flows from operating activities: |  |  |
Net income | $ 322,699 | $ 394,096 | $ 259,231
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation | 258,841 | 212,485 | 192,332
Amortization of intangible assets | 38,910 | 22,997 | 20,598
Goodwill and intangible asset impairment | 0 | 3,319 | 47,662
Non-cash interest expense, net | 2,988 | 3,219 | 2,584
Non-cash stock-based compensation expense | 21,875 | 16,447 | 13,527
Provision for deferred income taxes | 7,180 | 22,160 | 56,209
Equity in earnings of unconsolidated affiliates | (29,738) | (27,367) | (23,855)
Gains on sales of assets, net | (16,210) | (13,908) | (16,052)
Other non-cash items, net | 21,775 | (2,768) | 8,910
Changes in assets and liabilities, net of acquisitions: |  |  |
Accounts receivable | 87,372 | (124,739) | (8,363)
Contract assets | 63,306 | 237,800 | (326,838)
Inventories | 17,904 | 24,051 | (29,366)
Other assets, current and long-term portion | 20,486 | 10,180 | 28,709
Accounts payable and accrued expenses | 94,069 | (228,142) | 251,735
Contract liabilities | 21,326 | (52,215) | 28,411
Other liabilities, current and long-term portion | 4,471 | 52,663 | 24,522
Net cash provided by operating activities | 937,254 | 550,278 | 529,956
Cash flows from investing activities: |  |  |
Cash paid for acquisitions, net of cash acquired | (24,971) | (179,481) | (6,684)
Capital expenditures | (213,746) | (126,473) | (180,420)
Proceeds from sale of property and equipment | 37,077 | 35,015 | 39,359
Payments for other investments | (17,456) | (5,589) | (39,469)
Proceeds from other investments | 648 | 14,705 | 5,415
Other investing activities, net | 1,843 | 0 | 0
Net cash used in investing activities | (216,605) | (261,823) | (181,799)
Cash flows from financing activities: |  |  |
Proceeds from credit facilities | 1,434,610 | 3,025,927 | 3,418,232
Repayments of credit facilities | 1,741,067 | 3,126,595 | 3,359,521
Proceeds from issuance of 4.50% senior notes | 600,000 | 0 | 0
Repayments of 4.875% senior notes | (400,000) | 0 | 0
Repayments of other borrowings, net | (62) | (12,438) | (17,427)
Payments of finance lease obligations | (126,988) | (88,341) | (72,167)
Payments of acquisition-related contingent consideration | 10,097 | 34,267 | 15,929
(Distributions to) proceeds from non-controlling interests | (719) | 583 | (559)
Proceeds from stock-based awards | 7,090 | 4,655 | 4,047
Payments for stock-based awards | (636) | (45) | (3,821)
Repurchases of common stock | (120,228) | (5,652) | (313,949)
Other financing activities, net | (11,790) | (8,458) | 0
Net cash used in financing activities | (369,887) | (244,631) | (361,094)
Effect of currency translation on cash | 929 | 181 | 33
Net increase (decrease) in cash and cash equivalents | 351,691 | 44,005 | (12,904)
Cash and cash equivalents - beginning of period | 71,427 | 27,422 | 40,326
Cash and cash equivalents - end of period | 423,118 | 71,427 | 27,422
Supplemental cash flow information: |  |  |
Interest paid | 65,016 | 84,971 | 81,230
Income tax payments (refunds), net | 64,651 | 106,248 | (21,450)
Supplemental disclosure of non-cash information: |  |  |
Additions to property and equipment from finance leases | $ 114,221 | $ 206,156 | $ 75,545
4.50% Senior Notes [Member] | Senior Notes [Member] |  |  |
Debt instrument, interest rate (percentage) | 4.50% |  |
4.875% Senior Notes [Member] | Senior Notes [Member] |  |  |
Debt instrument, interest rate (percentage) | 4.875% |  |

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- Definition Amount of cash outflow, not made soon after acquisition date of business combination, to settle contingent consideration liability up to amount recognized at acquisition date, including, but not limited to, measurement period adjustment and less amount paid soon after acquisition date. + 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 (f) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585 + Details
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