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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Jun. 28, 2019 | Jun. 29, 2018
Cash flows from operating activities: |  |
Net loss | $ (23,151) | $ (16,607)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities: |  |
Amortization of intangibles | 4,162 | 4,194
Depreciation | 5,716 | 6,771
Stock-based compensation | 4,623 | 8,769
Amortization of discount on convertible debt and issuance cost | 3,262 | 2,954
Amortization of non-cash warrant | 48 | 395
Restructuring, asset impairment and loss on retirement of fixed assets | 101 | 93
Deferred income taxes, net | (145) | 530
Foreign currency adjustments | (325) | (1,042)
Provision for excess and obsolete inventories | 384 | 822
Allowance for doubtful accounts and returns | 500 | 623
Other non-cash adjustments, net | 303 | 64
Changes in operating assets and liabilities: |  |
Accounts receivable | 10,699 | (13,572)
Inventories | (2,440) | 2,000
Prepaid expenses and other assets | (1,526) | 1,897
Accounts payable | (1,752) | (4,187)
Deferred revenue | 4,989 | 9,378
Income taxes payable | (292) | 503
Accrued and other liabilities | (9,802) | (337)
Net cash provided by (used in) operating activities | (4,646) | 3,248
Cash flows from investing activities: |  |
Purchases of property and equipment | (2,939) | (3,181)
Net cash used in investing activities | (2,939) | (3,181)
Cash flows from financing activities: |  |
Proceeds from other debts and finance leases | 4,503 | 0
Repayment of other debts and finance leases | (6,162) | (6,176)
Proceeds from common stock issued to employees | 2,147 | 2,366
Payment of tax withholding obligations related to net share settlements of restricted stock units | (828) | (54)
Net cash used in financing activities | (340) | (3,864)
Effect of exchange rate changes on cash, cash equivalents and restricted cash | 0 | (588)
Net increase (decrease) in cash, cash equivalents and restricted cash | (7,925) | (4,385)
Cash, cash equivalents and restricted cash at beginning of period | 65,989 | 58,757
Cash, cash equivalents and restricted cash at end of period | 58,064 | 54,372
Supplemental disclosures of cash flow information: |  |
Income tax payments, net | 860 | 750
Interest payments, net | 2,495 | 2,545
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] |  |
Capital expenditures incurred but not yet paid | 78 | 491
Reconciliation of cash, cash equivalents, and restricted cash to the condensed consolidated balance sheets |  |
Total cash, cash equivalents and restricted cash | $ 65,989 | $ 58,757

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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669619-108580 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(22)) -URI http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669625-108580 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(18)) -URI http://asc.fasb.org/extlink&oid=114873790&loc=SL114874131-224263 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(20)) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Amount of cash outflow to satisfy an employee's income tax withholding obligation as part of a net-share settlement of a share-based award. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 25 -Paragraph 19A -URI http://asc.fasb.org/extlink&oid=107668666&loc=SL79513924-113897 + Details
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- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585 + Details
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