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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2024 | Jun. 30, 2023
Cash flows - operating activities |  |
Net income | $ 8,875 | $ 24,568
Adjustments to reconcile net income to net cash used in operating activities: |  |
Depreciation and amortization | 8,700 | 8,692
Deferred income taxes | (2,333) | 6,446
Stock-based compensation expense | 6,109 | 3,772
Accretion expense related to earnout payments | 935 | 642
Gain on marketable securities | (980) | (1,694)
Loss on disposal of property and equipment | 261 | 131
Impairment charges | 16,224 | 7,246
Changes in assets and liabilities: |  |
Accounts receivable | (55,842) | (59,990)
Accounts payable | (2,324) | (2,914)
Accrued expenses | (124,747) | (273,811)
Restructuring accrual | 4,386 | 0
Deferred revenue | (673) | 543
Income taxes recoverable and payable, net | 5,368 | (2,588)
Retirement and pension plan assets and liabilities | 5,800 | 6,403
Prepaid expenses | (4,652) | (2,635)
Other assets and liabilities, net | (6,009) | (4,902)
Net cash used in operating activities | (140,902) | (290,091)
Cash flows - investing activities |  |
Acquisition of businesses, net of cash acquired | 0 | (35,749)
Capital expenditures | (16,538) | (6,814)
Purchases of marketable securities and investments | (115,262) | (27,683)
Proceeds from sales of marketable securities and investments | 66,574 | 268,118
Net cash provided by (used in) investing activities | (65,226) | 197,872
Cash flows - financing activities |  |
Repurchases of common stock | 0 | (904)
Cash dividends paid | (6,398) | (6,234)
Payment of employee tax withholdings on equity transactions | (3,747) | (4,141)
Acquisition earnout payments | 0 | (35,946)
Net cash used in financing activities | (10,145) | (47,225)
Effect of exchange rate fluctuations on cash, cash equivalents and restricted cash | (6,423) | 1,772
Net decrease in cash, cash equivalents and restricted cash | (222,696) | (137,672)
Cash, cash equivalents and restricted cash at beginning of period | 412,618 | 355,489
Cash, cash equivalents and restricted cash at end of period | $ 189,922 | $ 217,817

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