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v3.23.3

UNAUDITED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2023 | Sep. 30, 2022
Cash flows from operating activities: |  |
Net income | $ 279,507 | $ 329,270
Adjustments to reconcile net income to net cash from operating activities: |  |
Depreciation and amortization | 267,425 | 260,560
Allowance for doubtful accounts | 2,620 | 6,684
Amortization of deferred financing costs and debt discount | 4,036 | 4,734
Accretion of environmental liabilities | 10,281 | 9,599
Changes in environmental liability estimates | 3,258 | 2,105
Deferred income taxes | (356) | 2,226
Other expense (income), net | 833 | (2,073)
Stock-based compensation | 14,809 | 20,375
Loss on early extinguishment of debt | 2,362 | 0
Gain on sale of business | 0 | (8,864)
Environmental expenditures | (24,064) | (9,720)
Changes in assets and liabilities, net of acquisitions: |  |
Accounts receivable and unbilled accounts receivable | (46,445) | (293,562)
Inventories and supplies | 12,691 | (44,324)
Other current and non-current assets | (18,190) | (12,600)
Accounts payable | (40,013) | 52,979
Other current and long-term liabilities | (13,062) | 40,153
Net cash from operating activities | 455,692 | 357,542
Cash flows used in investing activities: |  |
Additions to property, plant and equipment | (311,906) | (244,547)
Proceeds from sale and disposal of fixed assets | 5,129 | 5,118
Acquisitions, net of cash acquired | (119,596) | (73,568)
Proceeds from sale of business, net of transaction costs | 750 | 16,811
Additions to intangible assets including costs to obtain or renew permits | (1,507) | (1,094)
Purchases of available-for-sale securities | (104,329) | (36,418)
Proceeds from sale of available-for-sale securities | 84,390 | 51,736
Net cash used in investing activities | (447,069) | (281,962)
Cash flows used in financing activities: |  |
Change in uncashed checks | 3,004 | 887
Tax payments related to withholdings on vested restricted stock | (10,886) | (6,214)
Repurchases of common stock | (18,000) | (44,182)
Deferred financing costs paid | (6,371) | (410)
Payments on finance leases | (11,594) | (9,538)
Principal payments on debt | (621,475) | (13,152)
Proceeds from issuance of debt | 500,000 | 0
Borrowing from revolving credit facility | 114,000 | 0
Payment on revolving credit facility | (114,000) | 0
Net cash used in financing activities | (165,322) | (72,609)
Effect of exchange rate change on cash | 61 | (6,523)
Decrease in cash and cash equivalents | (156,638) | (3,552)
Cash and cash equivalents, beginning of period | 492,603 | 452,575
Cash and cash equivalents, end of period | 335,965 | 449,023
Cash payments for interest and income taxes: |  |
Interest paid | 100,813 | 86,407
Income taxes paid, net of refunds | 107,328 | 53,183
Non-cash investing activities: |  |
Property, plant and equipment accrued | 29,127 | 23,726
Remedial liability assumed in acquisition of property, plant and equipment | 0 | 8,092
ROU assets obtained in exchange for operating lease liabilities | 61,741 | 39,899
ROU assets obtained in exchange for finance lease liabilities | $ 26,317 | $ 11,263

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