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v3.22.1

Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Cash flows from operating activities |  |
Net income | $ 41,614 | $ 16,480
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation and amortization | 2,848 | 2,645
Deferred income taxes | 2,252 | 1,613
Stock-based compensation expense | 2,701 | 2,407
Provision for excess and obsolete inventory | 1,027 | 984
Changes in operating assets and liabilities: |  |
Accounts receivable | (15,199) | 10,431
Inventories | (11,490) | (16,503)
Prepaid expenses and other current assets | (1,852) | (3,325)
Accounts payable and other current liabilities | (3,582) | (1,008)
Deferred revenue | 6,418 | (909)
Income taxes | 858 | 2
Other assets and liabilities | 175 | 2,281
Net cash provided by operating activities | 25,770 | 15,098
Cash flows from investing activities |  |
Expenditures for property, plant and equipment and capitalized software | (1,503) | (1,347)
Net cash used in investing activities | (1,503) | (1,347)
Cash flows from financing activities |  |
Net settlement on restricted stock grants | (3,315) | (2,354)
Repurchase of common stock | (20,000) | (11,635)
Principal payments on finance lease obligation | (229) | (175)
Proceeds from exercise of stock options | 491 | 2,512
Net cash used in financing activities | (23,053) | (11,652)
Effect of exchange rate changes on cash and cash equivalents | 1,002 | 1,188
Net increase in cash, cash equivalents and restricted cash | 2,216 | 3,287
Cash, cash equivalents and restricted cash at beginning of period | 295,680 | 204,232
Cash, cash equivalents and restricted cash at end of period | $ 297,896 | $ 207,519

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