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v3.24.0.1

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 | $ 246,263 | $ 183,079 | $ 98,650
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation and amortization | 13,069 | 11,607 | 10,818
Deferred income taxes | (20,018) | 8,536 | 20,257
Stock-based compensation expense | 18,269 | 13,444 | 12,067
Provision for doubtful accounts | 1,129 |  |
Provision for excess and obsolete inventory | 5,211 | 4,565 | 3,755
Accretion of discounts and premiums on marketable securities | (12,077) |  |
Currency loss on foreign denominated transactions | 2,252 | 5,986 |
Changes in operating assets and liabilities: |  |  |
Accounts receivable | (50,755) | (67,270) | (18,146)
Inventories | (69,957) | (58,433) | (39,023)
Prepaid expenses and other current assets | (16,046) | (6,533) | (3,955)
Accounts payable and other current liabilities | (8,103) | 31,392 | 22,046
Deferred revenue | 56,183 | 86,366 | 45,385
Income taxes | 3,786 | 3,493 | 253
Other assets and liabilities | (12,337) | (625) | (1,917)
Net cash provided by operating activities | 156,869 | 215,607 | 150,190
Cash flows from investing activities |  |  |
Expenditures for property, plant and equipment and capitalized software | (20,656) | (10,683) | (8,718)
Purchase of short-term investments | (388,809) | (246,571) |
Maturities of short-term investments | 308,607 |  |
Net cash used in investing activities | (100,858) | (257,254) | (8,718)
Cash flows from financing activities |  |  |
Net settlement on restricted stock grants | (16,611) | (9,907) | (6,564)
Repurchase of common stock | (52,499) | (57,495) | (49,992)
Proceeds from Employee Stock Purchase Plan purchases | 2,057 | 1,662 | 1,179
Principal payments on finance lease obligation | (1,240) | (987) | (763)
Proceeds from exercise of stock options | 25 | 1,247 | 3,687
Net cash used in financing activities | (68,268) | (65,480) | (52,453)
Effect of exchange rate changes on cash and cash equivalents | (139) | (2,206) | 2,429
Net (decrease) increase in cash, cash equivalents and restricted cash | (12,396) | (109,333) | 91,448
Cash, cash equivalents and restricted cash at beginning of period | 186,347 | 295,680 | 204,232
Cash, cash equivalents and restricted cash at end of period | 173,951 | 186,347 | 295,680
Supplemental disclosure of cash flow information |  |  |
Income taxes | 54,217 | 10,763 | 1,500
Interest | $ 4,874 | $ 4,992 | $ 5,086

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