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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Jun. 29, 2018 | Jun. 30, 2017
Cash flows from operating activities: |  |
Net loss | $ (16,607) | $ (55,527)
Adjustments to reconcile net loss to net cash provided by operating activities: |  |
Amortization of intangibles | 4,194 | 4,144
Depreciation | 6,771 | 7,139
Stock-based compensation | 8,769 | 7,387
Amortization of discount on convertible debt and issuance cost | 2,954 | 2,676
Restructuring, asset impairment and loss on retirement of fixed assets | 93 | 228
Amortization of non-cash warrant | 395 | 416
Deferred income taxes, net | 530 | (38)
Foreign currency adjustments | (1,042) | 1,131
Provision for excess and obsolete inventories | 822 | 5,094
Allowance for doubtful accounts and returns | 623 | 3,274
Other non-cash adjustments, net | 64 | 189
Changes in operating assets and liabilities: |  |
Accounts receivable | (13,572) | 23,479
Inventories | 2,000 | 2,912
Prepaid expenses and other assets | 1,897 | 5,933
Accounts payable | (4,187) | 1,434
Deferred revenue | 9,378 | 1,308
Income taxes payable | 503 | 228
Accrued and other liabilities | (337) | (8,793)
Net cash provided by operating activities | 3,248 | 2,614
Cash flows from investing activities: |  |
Proceeds from maturities of investments | 0 | 3,106
Proceeds from sales of investments | 0 | 3,792
Purchases of property and equipment | (3,181) | (5,943)
Net cash (used in) provided by investing activities | (3,181) | 955
Cash flows from financing activities: |  |
Proceeds from other debts and capital leases | 0 | 164
Repayment of other debts and capital leases | (6,176) | (6,650)
Proceeds from common stock issued to employees | 2,366 | 2,117
Payment of tax withholding obligations related to net share settlements of restricted stock units | (54) | (2,726)
Net cash used in financing activities | (3,864) | (7,095)
Effect of exchange rate changes on cash, cash equivalents and restricted cash | (588) | 935
Net decrease in cash, cash equivalents and restricted cash | (4,385) | (2,591)
Cash, cash equivalents and restricted cash at beginning of period | 58,757 | 57,420
Cash, cash equivalents and restricted cash at end of period | 54,372 | 54,829
Reconciliation of cash, cash equivalents, and restricted cash to the condensed consolidated balance sheets |  |
Total Cash, Cash Equivalents and Restricted Cash | $ 58,757 | $ 57,420

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- Definition The cash inflow associated with maturities (principal being due), prepayments and calls (requests of early payments) on securities not classified as either held-to-maturity securities or trading securities which are classified as available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3179-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=82896770&loc=d3e26853-111562 + Details
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- Definition Amount of cash inflow from debt classified as other. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585 + Details
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- Definition The cash inflow from sales of all investments, including securities and other assets, having ready marketability and intended by management to be liquidated, if necessary, within the current operating cycle. Includes cash flows from securities classified as trading securities that were acquired for reasons other than sale in the short-term. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3179-108585 + Details
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- Definition The cash outflow during the period from the repayment of aggregate short-term and long-term debt and payment of capital lease obligations. + References No definition available. + Details
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- Definition Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan and expenses resulting from the write-down of assets. Excludes expenses related to a business combination, a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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