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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Cash flows used in operating activities: |  |
Net loss | $ (10,887) | $ (12,634)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Depreciation and amortization | 896 | 2,004
Amortization of deferred financing costs and debt discount | 550 | 578
Change in fair value of warrants | (3,407) | (2,233)
Allocation of issuance cost associated with warrants | 1,233 | 470
Share-based compensation expense | 127 | 355
Noncash lease expense | 12 | 0
Loss on sale of business | 6,508 | 0
Loss on asset disposal | 0 | 36
Provision for doubtful accounts | 0 | 18
Provision for excess inventory | 0 | 463
Increases (decreases) in cash caused by changes in operating assets and liabilities: |  |
Accounts receivable | (1,203) | (173)
Inventories | 259 | 475
Other current assets | (211) | 85
Other assets | 263 | 23
Accounts payable and accrued expenses | (28) | (1,532)
Deferred revenues | 29 | 73
Other long-term liabilities | (47) | 17
Net cash used in operating activities | (5,906) | (11,975)
Cash flows from (used in) investing activities: |  |
Purchases of property and equipment | (67) | (133)
Proceeds from sale of business | 5,637 | 0
Net cash provided by (used in) investing activities | 5,570 | (133)
Cash flows from financing activities: |  |
Principal payments of long-term obligations | (3,692) | 0
Payment of financing lease liability | (131) | 0
Proceeds from sale of common stock and unit offering, net of offering cost | 15,964 | 0
Proceeds from exercise of warrants | 490 | 0
Proceeds from sale of common and preferred stock | 0 | 7,234
Financial capital expenditures | 0 | (66)
Net cash provided by financing activities | 12,631 | 7,168
Effect of exchange rate changes on cash and cash equivalents | (4) | 16
Net increase (decrease) in cash and cash equivalents | 12,291 | (4,924)
Cash, cash equivalents, and restricted cash at beginning of period | 5,301 | 10,225
Cash, cash equivalents, and restricted cash at end of period | 17,592 | 5,301
Cash paid during period for: |  |
Interest | 1,188 | 1,331
Supplemental schedule of non-cash investing and financing activities: |  |
Proceeds from sales of business, net, paid directly to lender for principal payment of long-term obligations | 3,050 | 0
Offering cost paid in warrants | 213 | 0
Reclass of warrants upon exercise from liability to equity | 794 | 0
Fair value of Convertible Preferred Stock beneficial conversion feature | 554 | 2,487
Conversion of preferred stock into common | $ 0 | $ 8

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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 aggregate value of preferred stock dividends and other adjustments necessary to derive net income apportioned to common stockholders. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=117326831&loc=d3e1377-109256 + Details
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- Definition The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, 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 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3179-108585 + 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 Amount of expense (reversal of expense) for expected credit loss on accounts receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(5)) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 + Details
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- Definition The cash outflow for debt initially having maturity due after one year or beyond the normal 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 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585 + 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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