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v3.20.1

Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Operating activities |  |  |
Net loss | $ (152,600) | $ (158,899) | $ (95,154)
Adjustments to reconcile net loss to net cash used in operating activities: |  |  |
Depreciation and amortization | 8,938 | 3,621 | 3,244
Amortization of right-of-use assets | 3,375 |  |
Loss (gain) on disposal of property and equipment | 18 | 98 | (10)
Accretion of discounts and amortization of premiums on marketable securities | (1,462) | (1,559) | (193)
Change in fair value of warrant liability | 7,500 |  |
Reversal of deferred rent upon lease amendment |  |  | (209)
Stock compensation expense | 25,456 | 23,478 | 14,917
Cost of sales - amortization of intangible assets | 9,217 | 10,862 | 1,194
Non-cash interest expense | 4,973 | 2,755 |
Tenant improvements provided by the landlord | 6,999 |  |
Changes in operating assets and liabilities: |  |  |
Accounts and other receivables, net | (5,182) | (2,850) | 488
Inventories, net | (22,310) | (18,710) | (312)
Prepaid expenses and other current assets | (1,278) | (2,405) | (1,830)
Other assets | 1,632 | (3,706) | (936)
Accounts payable | 4,848 | 3,417 | (1,915)
Lease liabilities | (2,000) |  |
Accrued liabilities and other long-term liabilities | (9,376) | 12,597 | 3,198
Net cash used in operating activities | (121,252) | (131,301) | (77,518)
Investing activities |  |  |
Acquisition of technology licenses | (7,000) | (11,000) |
Purchases of marketable securities | (215,191) | (213,804) | (227,672)
Proceeds from maturities and redemptions of marketable securities | 201,810 | 284,457 | 119,638
Purchases of property and equipment, net | (22,401) | (4,187) | (669)
Net cash (used in) provided by investing activities | (42,782) | 55,466 | (108,703)
Financing activities |  |  |
Proceeds from long-term debt, net | 74,250 | 99,000 |
Proceeds from issuances of common stock, net | 65,948 |  | 185,936
Proceeds from issuances of preferred stock, net | 13,586 |  |
Proceeds (tax withholding) from exercise of stock options and restricted stock awards, net | 2 | (523) | 1,613
Proceeds from Employee Stock Purchase Plan | 565 | 594 | 293
Net cash provided by financing activities | 154,351 | 99,071 | 187,842
Effect of exchange rate changes on cash, cash equivalents and restricted cash | (184) | (482) | 701
Net (decrease) increase in cash, cash equivalents and restricted cash | (9,867) | 22,754 | 2,322
Cash, cash equivalents and restricted cash at beginning of year | 49,967 | 27,213 | 24,891
Cash, cash equivalents and restricted cash at end of year | 40,100 | 49,967 | 27,213
Supplemental disclosure of cash flow information |  |  |
Cash paid during the year for interest | 12,147 | 6,583 |
Release of accrual for litigation settlement and insurance recovery |  |  | 4,975
Non-cash investing and financing activities: |  |  |
Non-cash acquisition of technology license |  | 12,773 |
Purchases of property and equipment, not yet paid | 2,698 | $ 920 | $ 378
Proceeds allocated to warrant liability at issuance | 7,360 |  |
Right-of-use assets obtained in exchange for operating lease liabilities | $ 40,626 |  |

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- Definition Amount of cash outflow for purchase of marketable security. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=118954083&loc=d3e26853-111562 + 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=118932676&loc=d3e3213-108585 + Details
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- Definition The cash inflow from the additional capital contribution to the entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585 + Details
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- Definition The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585 + Details
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- Definition Proceeds from issuance of capital stock which provides for a specific dividend that is paid to the shareholders before any dividends to common stockholders and which takes precedence over common stockholders in the event of liquidation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585 + Details
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- Definition Amount of cash inflow from sale, maturity, prepayment and call of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3151-108585 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3179-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=118954083&loc=d3e26853-111562 + Details
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- Definition The cash inflow associated with the amount received from the stock plan during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585 + Details
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- Definition Amount of increase in right-of-use asset obtained in exchange for operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=77888399&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(2) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 + Details
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- Definition Amount of noncash expense for share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 + Details
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