Consolidated Statements of Cash Flows - USD ($)
$ in Thousands |
12 Months Ended |
Dec. 31, 2021 |
Dec. 31, 2020 |
| Cash Flows From Operating Activities: |
|
|
| Net loss |
$ (24,449)
|
$ (12,580)
|
| Adjustments to reconcile net loss to net cash used in operating activities: |
|
|
| Depreciation and amortization |
478
|
163
|
| Share-based compensation |
5,356
|
2,237
|
| Common shares issued for services |
239
|
0
|
| Product line exit expense |
747
|
0
|
| Debt forgiveness income |
0
|
(417)
|
| Gain on sale of assets |
(27)
|
0
|
| Warranty provision |
10
|
30
|
| Inventory write-offs |
0
|
(68)
|
| Software impairment charge |
170
|
0
|
| Change in contingent liability |
(23)
|
0
|
| Non-cash lease expense |
88
|
122
|
| Non-cash interest expense |
0
|
2
|
| Provision for doubtful accounts |
123
|
10
|
| Changes in assets and liabilities: |
|
|
| Accounts receivable |
(2,111)
|
(1,686)
|
| Inventories |
559
|
(343)
|
| Prepaid expenses and other current assets |
(109)
|
(508)
|
| Accounts payable |
546
|
825
|
| Operating lease liability |
(94)
|
(128)
|
| Customer deposits |
41
|
(342)
|
| Accrued liabilities and other |
(54)
|
493
|
| Warranty settlement |
38
|
4
|
| Deferred revenue |
249
|
(1)
|
| Net cash used in operating activities |
(18,223)
|
(12,187)
|
| Cash Flows From Investing Activities: |
|
|
| Purchase of short-term investments |
(55,014)
|
(34,980)
|
| Proceeds from maturities of short-term investments |
50,005
|
10,000
|
| Capital expenditures for property and equipment |
(995)
|
(249)
|
| Business acquisition |
0
|
(210)
|
| Proceeds from long-term deposits |
4
|
0
|
| Net cash used in investing activities |
(6,937)
|
(26,111)
|
| Cash Flows From Financing Activities: |
|
|
| Sale of common stock and warrants |
0
|
12,400
|
| Offering costs paid on sale of common stock and warrants |
0
|
(733)
|
| Proceeds from exercise of warrants |
12,047
|
26,191
|
| Offering costs paid on exercise of warrants |
0
|
(1,016)
|
| Proceeds from exercise of stock options |
1,678
|
705
|
| Proceeds from bank note |
0
|
414
|
| Repayment of debt |
(275)
|
0
|
| Net cash provided by financing activities |
13,450
|
37,961
|
| Net decrease in cash and cash equivalents |
(11,710)
|
(337)
|
| Cash and cash equivalents, beginning of period |
16,647
|
16,984
|
| Cash and cash equivalents, end of period |
4,937
|
16,647
|
| Supplemental Disclosure of Non-Cash Investing |
|
|
| Business acquisition liability |
0
|
298
|
| Business acquisition cost in deferred revenue |
0
|
15
|
| Change in unrealized gain on short-term investments |
(21)
|
15
|
| Patents and Trademarks [Member] |
|
|
| Cash Flows From Investing Activities: |
|
|
| Payments for intangible assets |
(187)
|
(129)
|
| Intangibles Other than Patents and Trademarks [Member] |
|
|
| Cash Flows From Investing Activities: |
|
|
| Payments for intangible assets |
$ (750)
|
$ (543)
|