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v3.22.1

Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Apr. 03, 2022 | Apr. 04, 2021
Cash flows from operating activities: |  |
Net income | $ 67,333 | $ 69,848
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Stock-based compensation expense | 15,056 | 12,009
Depreciation of property, plant, and equipment | 4,117 | 4,259
Loss (gain) on disposal of property, plant, and equipment | 0 | 3
Amortization of intangible assets | 840 | 927
Excess and obsolete inventory charges | 379 | 705
Amortization of discounts or premiums on investments | 1,402 | 586
Realized loss (gain) on sale of investments | 36 | 0
Change in deferred income taxes | (3,891) | 1,250
Accounts receivable | (24,700) | (3,495)
Unbilled revenue | 2,144 | 3,958
Inventories | (23,900) | (1,323)
Prepaid expenses and other current assets | 4,212 | (10,882)
Accounts payable | 708 | 4,760
Accrued expenses | (28,718) | (15,973)
Accrued income taxes | 16,745 | 1,651
Deferred revenue and customer deposits | 18,712 | 30,641
Other | (958) | (285)
Net cash provided by operating activities | 49,517 | 98,639
Cash flows from investing activities: |  |
Purchases of investments | (39,155) | (298,911)
Maturities and sales of investments | 112,976 | 160,552
Purchases of property, plant, and equipment | (4,585) | (2,436)
Net cash provided by (used in) investing activities | 69,236 | (140,795)
Cash flows from financing activities: |  |
Net proceeds from issuance of common stock under stock plans | 3,594 | 34,744
Repurchase of common stock | (130,405) | (6,479)
Payment of dividends | (11,303) | (10,595)
Net cash provided by (used in) financing activities | (138,114) | 17,670
Effect of foreign exchange rate changes on cash and cash equivalents | (1,031) | (1,899)
Net change in cash and cash equivalents | (20,392) | (26,385)
Cash and cash equivalents at beginning of period | 186,161 | 269,073
Cash and cash equivalents at end of period | $ 165,769 | $ 242,688

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