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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
OPERATING ACTIVITIES |  |  |
Net income | $ 91,444 | $ 195,113 | $ 218,363
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation and amortization | 132,575 | 108,123 | 83,017
Stock-based compensation expense | 9,186 | 7,881 | 6,375
Gain on disposition of assets, net | (8,199) | (9,344) | (8,804)
Gain due to benefit plan financing arrangement | (1,151) |  |
Deferred income tax provision | 6,899 | 8,647 | 19,496
Pension settlement charges |  | 18,286 | 2,921
Other non-cash adjustments | 709 | 126 | 647
Decrease (increase) in assets: |  |  |
Accounts receivable | 48,032 | 104,574 | (157,894)
Income taxes receivable | 47,937 | (9,866) | 16,101
Inventories | 2,958 | (12,341) | (18,413)
Prepaid expenses | (1,579) | 5,233 | (7,980)
Other current assets | (1) | 311 | 406
Other non-current assets | (2,181) | (1,285) | 9,306
Increase (decrease) in liabilities: |  |  |
Accounts payable | 278 | (34,519) | 35,759
Income taxes payable | 171 | (224) | (157)
Unearned revenue | 29,633 | 15,743 |
Accrued payroll and related expenses | (5,652) | (2,223) | 17,864
Pension liabilities |  | (5,419) |
Accrued insurance expenses | 2,602 | 2,108 | (6,897)
Accrued state, local and other taxes | (1,227) | 165 | 2,391
Other accrued expenses | (6,489) | (5,732) | (3,703)
Pension and retirement plan liabilities | 815 | 618 | (4,589)
Long-term accrued insurance expenses | 1,973 | 3,053 | (4,621)
Other long-term liabilities | 653 | 5,735 | 1,698
Net cash provided by operating activities | 349,386 | 394,763 | 201,286
INVESTING ACTIVITIES |  |  |
Capital expenditures | (219,930) | (181,005) | (139,552)
Proceeds from sale of assets | 18,379 | 18,091 | 15,837
Purchase of business |  | (78,798) |
Proceeds from benefit plan financing arrangement | 2,380 |  |
Re-investment in benefit plan financing arrangement | (2,380) |  |
Net cash used for investing activities | (201,551) | (241,712) | (123,715)
FINANCING ACTIVITIES |  |  |
Payment of dividends | (34,433) | (34,562) | (8,645)
Cash paid for common stock purchased and retired | (9,938) | (21,088) | (918)
Cash paid for finance lease and finance obligations | (799) | (515) | (24,017)
Net cash used for financing activities | (45,170) | (56,165) | (33,580)
Net increase in cash and cash equivalents | 102,665 | 96,886 | 43,991
Cash and cash equivalents at beginning of period | 223,310 | 126,424 | 82,433
Cash and cash equivalents at end of period | 325,975 | 223,310 | 126,424
Supplemental cash flows disclosure: |  |  |
Interest paid | 170 | 166 | 170
Supplemental disclosure of noncash investing activities: |  |  |
Capital expenditures included in accounts payable | $ 8,199 | $ 9,036 | $ 9,334

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