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Unaudited Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
9 Months Ended
Oct. 03, 2021
Sep. 27, 2020
Cash flows from operating activities:    
Net income $ 50,378 $ 27,345
Adjustments to reconcile net income to net cash provided by (used in) operating activities:    
Depreciation and amortization 10,922 14,243
Stock-based compensation 20,072 22,726
Gain/loss on investments, net 174 5,374
Change in fair value of contingent consideration (3,003) 276
Deferred income taxes 4,838 1,574
Provision for excess and obsolete inventory 3,045 6,353
Changes in assets and liabilities:    
Accounts receivable 70,526 (62,837)
Inventories (136,062) 84,834
Prepaid expenses and other assets (5,678) 3,975
Accounts payable (15,344) 6,862
Accrued employee compensation (12,654) 10,924
Other accrued liabilities 6,193 5,668
Deferred revenue 2,061 5,302
Income taxes payable (3,966) 2,443
Net cash provided by (used in) operating activities (8,498) 135,062
Cash flows from investing activities:    
Purchases of property and equipment (6,918) (6,112)
Purchases of long-term investments (535) (6,300)
Other 20 (2)
Net cash used in investing activities (7,433) (12,414)
Cash flows from financing activities:    
Repurchases of common stock (53,634) (22,508)
Restricted stock unit withholdings (7,456) (4,750)
Proceeds from exercise of stock options 8,912 11,016
Proceeds from issuance of common stock under employee stock purchase plan 4,916 3,878
Net cash used in financing activities (47,262) (12,364)
Net increase (decrease) in cash and cash equivalents (63,193) 110,284
Cash and cash equivalents, at beginning of period 346,460 190,208
Cash and cash equivalents, at end of period $ 283,267 $ 300,492