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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:      
Net income (loss) $ 167,645 $ 141,561 $ (64,080)
Adjustments to reconcile net income (loss) to net cash used in operating activities:      
Depreciation and amortization 104,386 101,969 108,039
Non-cash interest expense 4,188 4,117 4,146
Amortization of premium (accretion of discount) on investments (9,228) 3,043 5,155
Stock-based compensation 207,099 196,308 197,263
Gain on sale of nonfinancial assets, net 0 (108,000) 0
Impairment of assets 38,608 0 0
Deferred income taxes (44,981) (52,087) (15,608)
Unrealized foreign exchange loss (gain) 28,446 (14,287) (1,810)
Non-cash changes in the fair value of contingent consideration 0 1,704 8,026
Other (365) (2,043) (2,629)
Changes in operating assets and liabilities:      
Accounts receivable, net (190,435) (82,033) 65,574
Inventory (157,058) (68,264) (35,060)
Other current assets (50,335) 7,822 29,760
Other assets (31,149) (19,859) (6,593)
Accounts payable and other short-term liabilities 68,853 59,018 15,689
Other long-term liabilities 23,585 6,933 (3,336)
Net cash provided by operating activities 159,259 175,902 304,536
CASH FLOWS FROM INVESTING ACTIVITIES:      
Purchases of property, plant and equipment (96,691) (120,959) (95,578)
Maturities and sales of investments 864,863 619,995 691,049
Purchases of investments (868,496) (611,809) (937,143)
Proceeds from sale of nonfinancial assets 0 103,325 0
Purchase of intangible assets (10,920) (10,581) (23,647)
Other 0 0 (994)
Net cash used in investing activities (111,244) (20,029) (366,313)
CASH FLOWS FROM FINANCING ACTIVITIES:      
Proceeds from exercises of awards under equity incentive plans 69,353 69,333 49,194
Taxes paid related to net share settlement of equity awards (76,319) (54,283) (45,805)
Payments of contingent consideration (9,475) (31,095) 0
Principal repayments of financing leases (2,286) (2,605) (3,039)
Other 0 0 (398)
Net cash used in financing activities (18,727) (18,650) (48)
Effect of exchange rate changes on cash 1,308 32 (57)
NET INCREASE IN CASH AND CASH EQUIVALENTS 30,596 137,255 (61,882)
Cash and cash equivalents:      
Beginning of period 724,531 587,276 649,158
End of period 755,127 724,531 587,276
SUPPLEMENTAL CASH FLOW DISCLOSURES:      
Cash paid for interest 10,303 10,281 10,395
Cash paid for income taxes 73,312 54,372 18,153
SUPPLEMENTAL CASH FLOW DISCLOSURES FOR NON-CASH INVESTING AND FINANCING ACTIVITIES:      
Increase (decrease) in accounts payable and accrued liabilities related to fixed assets 164 (1,482) (4,749)
Increase in accounts payable and accrued liabilities related to intangible assets $ 6,904 $ 742 $ 9,428