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UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2022 | Jun. 30, 2021
Cash flows from operating activities: |  |
Net loss | $ (4,484) | $ (14,846)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Change in fair value of contingent consideration | (134) | (302)
Change in fair value of contract consideration convertible notes payable | (13,266) | 0
Amortization of convertible note issuance cost | 414 | 0
Paid-in-kind interest expense | 1,819 | 0
Amortization of contract assets | 737 | 0
Depreciation and amortization | 377 | 560
Provision for doubtful accounts, net of recoveries | 87 | (1)
Provision for excess and obsolete inventory | 769 | 580
Gain on sale of property and equipment | (1,906) | (69)
Gain on lease termination | (584) | 0
Non-cash lease expense | 112 | 163
Stock compensation expense | 1,591 | 1,750
Deferred income tax (benefit) expense | (5) | 10
Paycheck protection plan loan forgiveness | 0 | (881)
Changes in current assets and liabilities: |  |
Accounts receivable | (10,141) | 1,995
Inventories | (4,521) | (222)
Income taxes receivable | 7 | 207
Other current assets | (244) | (672)
Contract asset, net | (3,600) | 0
Other long-term assets | 12 | 541
Accounts payable | 12,154 | 801
Accrued liabilities | (2,924) | (1,048)
Operating lease liabilities | (308) | 0
Income taxes payable | 99 | 168
Interest payable | 24 | 24
Net cash used in operating activities | (23,915) | (11,242)
Cash flows from investing activities: |  |
Capital expenditures | (5) | (31)
Proceeds from sale of assets | 4,194 | 74
Net cash provided by investing activities | 4,189 | 43
Cash flows from financing activities: |  |
Proceeds from issuance of convertible notes | 21,150 | 0
Payment of issuance costs of convertible notes | (1,084) | 0
Proceeds from issuance of warrants | 19,500 | 0
Payments to tax authorities for shares withheld from employees | (138) | (78)
Purchase from sale of common stock | 24 | 0
Purchase from sale of common stock | 0 | (166)
Payments for finance leases | (21) | (29)
Net cash provided by (used in) financing activities | 39,431 | (273)
Effect of changes in exchange rates on cash and cash equivalents | 95 | (31)
Net change in cash, cash equivalents and restricted cash | 19,800 | (11,503)
Cash and cash equivalents at the beginning of period | 11,534 | 38,660
Restricted cash at the beginning of period | 1,790 | 664
Cash and cash equivalents and restricted cash at beginning of period | 13,324 | 39,324
Cash and cash equivalents at end of period | 33,084 | 27,781
Restricted cash at the end of period | 40 | 40
Cash, cash equivalents and restricted cash at end of period | $ 33,124 | $ 27,821

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- Definition Amount of cash outflow to satisfy grantee's tax withholding obligation for award under share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585 + Details
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