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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 25, 2021 | Sep. 26, 2020 | Sep. 25, 2021 | Sep. 26, 2020 | Dec. 26, 2020
Cash flows from operating activities: |  |  |  |  |
Net income | $ 20,497 | $ 22,891 | $ 58,027 | $ 59,250 |
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |  |
Depreciation |  |  | 19,256 | 14,491 |
Amortization |  |  | 16,362 | 20,249 |
Reduction in the carrying amount of right-of-use assets |  |  | 5,412 | 4,294 |
Stock-based compensation expense |  |  | 21,585 | 16,774 |
Provision for excess and obsolete inventories |  |  | 11,621 | 9,763 |
Non-cash restructuring charges |  |  | 1,592 | 0 |
Gain on contingent consideration |  |  | (95) | (3,771) |
Other adjustments to reconcile net income to net cash provided by operating activities |  |  | 1,627 | (977) |
Changes in assets and liabilities: |  |  |  |  |
Accounts receivable |  |  | 1,157 | 5,712 |
Inventories |  |  | (30,335) | (18,566) |
Prepaid expenses and other current assets |  |  | 3,631 | (5,619) |
Other assets |  |  | (333) | 219 |
Accounts payable |  |  | 1,488 | 18,054 |
Accrued liabilities |  |  | (6,951) | 4,754 |
Other liabilities |  |  | 47 | 272 |
Deferred revenues |  |  | 2,000 | 3,806 |
Operating lease liabilities |  |  | (5,654) | (4,496) |
Net cash provided by operating activities |  |  | 100,437 | 124,209 |
Cash flows from investing activities: |  |  |  |  |
Acquisition of property, plant and equipment |  |  | (51,353) | (41,887) |
Acquisition of business, net of cash acquired |  |  | 0 | (34,999) |
Proceeds from sale of a subsidiary |  |  | 0 | 82 |
Purchases of marketable securities |  |  | (114,898) | (29,721) |
Proceeds from maturities and sales of marketable securities |  |  | 71,275 | 50,330 |
Net cash used in investing activities |  |  | (94,976) | (56,195) |
Cash flows from financing activities: |  |  |  |  |
Proceeds from issuances of common stock |  |  | 10,647 | 9,588 |
Purchase of common stock through stock repurchase program |  |  | (23,951) | 0 |
Tax withholdings related to net share settlements of equity awards |  |  | (12,643) | (15,382) |
Payment of contingent consideration |  |  | (3,873) | 0 |
Proceeds from term loan |  |  | 0 | 18,000 |
Principal repayments on term loans |  |  | (7,049) | (41,098) |
Payment of term loan debt issuance costs |  |  | 0 | (78) |
Net cash used in financing activities |  |  | (36,869) | (28,970) |
Effect of exchange rate changes on cash, cash equivalents and restricted cash |  |  | (2,216) | 1,262 |
Net increase (decrease) in cash, cash equivalents and restricted cash |  |  | (33,624) | 40,306 |
Cash, cash equivalents and restricted cash, beginning of period |  |  | 191,098 | 147,937 | $ 147,937
Cash, cash equivalents and restricted cash, end of period | 157,474 | 188,243 | 157,474 | 188,243 | 191,098
Non-cash investing and financing activities: |  |  |  |  |
Increase in accounts payable and accrued liabilities related to property, plant and equipment purchases |  |  | 4,684 | 3,041 |
Increase in accrued liabilities related to tax withholdings related to net share settlements of equity awards |  |  | 6,952 | 0 |
Operating lease, right-of-use assets obtained in exchange for lease obligations |  |  | 11,699 | 1,549 |
Supplemental disclosure of cash flow information: |  |  |  |  |
Cash paid for income taxes, net |  |  | 6,795 | 7,475 |
Cash paid for interest |  |  | 496 | 683 |
Operating cash outflows from operating leases |  |  | 6,420 | 5,566 |
Reconciliation of cash, cash equivalents and restricted cash: |  |  |  |  |
Cash and cash equivalents | 153,781 | 185,368 | 153,781 | 185,368 | 187,225
Restricted cash, current | 2,019 | 1,477 | 2,019 | 1,477 |
Restricted cash, non-current | 1,674 | 1,398 | 1,674 | 1,398 |
Total cash, cash equivalents and restricted cash | $ 157,474 | $ 188,243 | $ 157,474 | $ 188,243 | $ 191,098

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