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v3.10.0.1

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 29, 2018 | Sep. 30, 2017
Cash flows from operating activities: |  |
Net income | $ 45,624 | $ 19,404
Reconciliation of net income to net cash provided by operating activities: |  |
Depreciation and amortization | 4,962 | 5,219
Stock-based compensation | 8,229 | 6,775
Disposal of fixed assets | 38 | 98
Inventory write-down | 870 | 1,412
Deferred income taxes | 4,668 | 2,153
Changes in assets and liabilities: |  |
Accounts receivable | 11,520 | 1,418
Inventories | (6,351) | (16,828)
Inventories-delivered systems | (324) | (864)
Prepaid expenses and other | (1,224) | (3,850)
Accounts payable, accrued and other liabilities | 9,623 | 709
Deferred revenue | 5,126 | (1,204)
Income taxes payable | 647 | 942
Net cash provided by operating activities | 83,408 | 15,384
Cash flows from investing activities: |  |
Payments to acquire certain assets | (2,000) | (2,000)
Sales of marketable securities | 19,776 | 28,624
Maturities of marketable securities | 32,195 | 62,923
Purchases of marketable securities | (46,604) | (104,984)
Purchases of property, plant and equipment | (2,942) | (2,342)
Net cash provided by (used in) investing activities | 425 | (17,779)
Cash flows from financing activities: |  |
Proceeds from sale of shares under employee stock option plans and purchase plan | 3,826 | 3,678
Taxes paid on net issuance of stock awards | (3,122) | (3,838)
Repurchases of common stock under share repurchase plans | (22,987) |
Net cash used in financing activities | (22,283) | (160)
Effect of exchange rate changes on cash and cash equivalents | (346) | (466)
Net increase (decrease) in cash and cash equivalents | 61,204 | (3,021)
Cash and cash equivalents, beginning of period | 34,899 | 47,062
Cash and cash equivalents, end of period | 96,103 | 44,041
Supplemental disclosure of non-cash investing activities: |  |
Transfer of property, plant and equipment to inventory | 893 | $ 205
Transfer of inventory to property, plant and equipment | 291 |
Property, plant and equipment included in accounts payable, accrued and other liabilities | $ 1,684 |

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