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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 26, 2020 | Dec. 28, 2019 | Dec. 29, 2018
OPERATING ACTIVITIES |  |  |
Net income | $ 129,986 | $ 139,082 | $ 164,565
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation | 56,139 | 52,477 | 51,003
Amortization of intangibles | 40,039 | 40,026 | 52,190
Impairment charges | 36,078 | 322 | 2,218
Deferred revenue | (593) | (318) | 3,965
Non-cash inventory charges | 0 | 0 | 36,927
Stock-based compensation | 18,129 | 19,046 | 27,431
(Gain) loss on investments and other assets | (4,663) | 4,854 | (670)
Deferred income taxes | (3,214) | (1,147) | (4,679)
Other | (18,230) | 6,638 | 620
Changes in operating assets and liabilities: |  |  |
Trade receivables | (25,588) | 28,497 | (3,539)
Inventories | (12,425) | 22,094 | (33,971)
Accounts payable | 28,820 | (22,574) | 13,708
Accrued liabilities and income taxes | 6,765 | (54,242) | 29,329
Prepaid expenses and other assets | 6,788 | 10,573 | (7,269)
Net cash provided by operating activities | 258,031 | 245,328 | 331,828
INVESTING ACTIVITIES |  |  |
Acquisitions of businesses, net of cash acquired | 0 | (775) | (318,474)
Proceeds from sales and maturities of short-term investments | 0 | 0 | 1,407
Purchases of property, plant, and equipment | (56,191) | (61,895) | (74,753)
Proceeds from sale of property, plant, and equipment | 4,758 | 6,213 | 9,572
Net cash used in investing activities | (51,433) | (56,457) | (382,248)
FINANCING ACTIVITIES |  |  |
Proceeds of revolving credit facility | 240,000 | 0 | 60,000
Payments of revolving credit facility | (110,000) | 0 | (60,000)
Proceeds of term loan | 0 | 0 | 75,000
Payments of term loan | (145,000) | (10,000) | (42,500)
Proceeds from senior notes payable | 0 | 0 | 175,000
Net proceeds related to stock-based award activities | 18,744 | 7,800 | 18,857
Cash dividends paid | (46,839) | (44,689) | (39,993)
Purchases of common stock | (22,927) | (99,387) | (63,564)
Debt issuance costs | (1,786) | 0 | (903)
Net cash (used in) provided by financing activities | (67,808) | (146,276) | 121,897
Effect of exchange rate changes on cash and cash equivalents | 17,596 | (1,189) | (11,420)
Increase in cash and cash equivalents | 156,386 | 41,406 | 60,057
Cash and cash equivalents at beginning of year | 531,139 | 489,733 | 429,676
Cash and cash equivalents at end of year | 687,525 | 531,139 | 489,733
Supplementary Cash Flow Information |  |  |
Cash paid during the period for interest | 20,095 | 21,240 | 18,462
Cash paid during the period for income taxes, net of refunds | 27,619 | 40,518 | 41,904
Capital expenditures, not yet paid | $ 6,126 | $ 11,110 | $ 0

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