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v3.23.2

UNAUDITED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2023 | Jun. 30, 2022
Cash flows from operating activities: |  |
Net income | $ 188,167 | $ 193,471
Adjustments to reconcile net income to net cash from operating activities: |  |
Depreciation and amortization | 174,455 | 172,166
Allowance for doubtful accounts | 1,209 | 6,927
Amortization of deferred financing costs and debt discount | 2,718 | 3,135
Accretion of environmental liabilities | 6,893 | 6,353
Changes in environmental liability estimates | 387 | 1,232
Deferred income taxes | (356) | 2,226
Other expense (income), net | 1,167 | (1,969)
Stock-based compensation | 10,518 | 12,547
Loss on early extinguishment of debt | 2,362 | 0
Gain on sale of business | 0 | (8,864)
Environmental expenditures | (16,323) | (7,028)
Changes in assets and liabilities, net of acquisitions: |  |
Accounts receivable and unbilled accounts receivable | (5,659) | (263,584)
Inventories and supplies | (1,111) | (23,888)
Other current and non-current assets | (22,749) | (25,504)
Accounts payable | (78,139) | 45,748
Other current and long-term liabilities | (27,966) | 19,002
Net cash from operating activities | 235,573 | 131,970
Cash flows used in investing activities: |  |
Additions to property, plant and equipment | (204,298) | (148,042)
Proceeds from sale and disposal of fixed assets | 2,944 | 3,023
Acquisitions, net of cash acquired | (120,636) | (68,766)
Proceeds from sale of business, net of transaction costs | 0 | 17,486
Additions to intangible assets including costs to obtain or renew permits | (1,114) | (836)
Purchases of available-for-sale securities | (74,451) | (23,182)
Proceeds from sale of available-for-sale securities | 50,290 | 32,835
Net cash used in investing activities | (347,265) | (187,482)
Cash flows used in financing activities: |  |
Change in uncashed checks | 2,392 | 475
Tax payments related to withholdings on vested restricted stock | (4,335) | (2,571)
Repurchases of common stock | (8,001) | (33,694)
Deferred financing costs paid | (6,346) | (321)
Payments on finance leases | (7,588) | (6,552)
Principal payments on debt | (618,975) | (8,768)
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 | (142,853) | (51,431)
Effect of exchange rate change on cash | 718 | (1,001)
Decrease in cash and cash equivalents | (253,827) | (107,944)
Cash and cash equivalents, beginning of period | 492,603 | 452,575
Cash and cash equivalents, end of period | 238,776 | 344,631
Cash payments for interest and income taxes: |  |
Interest paid | 49,257 | 48,104
Income taxes paid, net of refunds | 92,494 | 29,307
Non-cash investing activities: |  |
Property, plant and equipment accrued | 26,427 | 21,156
Remedial liability assumed in acquisition of property, plant and equipment | 0 | 13,073
ROU assets obtained in exchange for operating lease liabilities | 38,474 | 20,686
ROU assets obtained in exchange for finance lease liabilities | $ 13,992 | $ 7,646

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