| 2015年
12月31日 | 2016年
12月31日 | 2017年
12月31日 | 2018年
12月31日 | 2019年
12月31日 | 2020年
12月31日 | 2021年
12月31日 | 2022年
12月31日 |
|---|
| Cash and cash equivalents | 43 | 36 | 5 | 16 | 11 | 22 | 20 | 15 |
|---|
| Accounts receivable, net of allowance for doubtful accounts of $73 and $6 at December 31, 2022 and 2021, respectively | 2 | 4 | 1 | 1 | 1 | 1 | 1 | 1 |
|---|
| Inventories, net | 5 | 8 | 4 | 3 | 4 | 4 | 5 | 5 |
|---|
| Prepaid expenses and other current assets | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 |
|---|
| Total current assets | 51 | 49 | 11 | 22 | 17 | 28 | 26 | 21 |
|---|
| Operating lease | - | - | - | - | 5 | 4 | 3 | 2 |
|---|
| Property and equipment, net | 3 | 5 | 3 | 2 | 2 | 1 | 0 | 1 |
|---|
| Other assets | 0 | 0 | 1 | - | 1 | 1 | 0 | 0 |
|---|
| Total assets | 54 | 54 | 15 | 24 | 24 | 33 | 29 | 24 |
|---|
| Accounts payable | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 |
|---|
| Accrued compensation | 3 | 3 | 1 | 1 | 2 | 2 | 2 | 1 |
|---|
| Accrued expenses and other current liabilities | 3 | 3 | 4 | 1 | 1 | 1 | 1 | 1 |
|---|
| Leasehold liability, current portion | - | - | - | - | 1 | 1 | 1 | 1 |
|---|
| Borrowings, current portion | - | 41 | 45 | 7 | 9 | 4 | - | 14 |
|---|
| Total current liabilities | 7 | 49 | 50 | 14 | 13 | 7 | 5 | 18 |
|---|
| Borrowings, long-term portion | 30 | - | - | - | - | 9 | 12 | - |
|---|
| Leasehold liability, long-term portion | - | - | - | - | 4 | 3 | 2 | 1 |
|---|
| Other long-term liabilities | 1 | 1 | 0 | 0 | 0 | - | 1 | 1 |
|---|
| Total liabilities | 39 | 49 | 51 | 14 | 17 | 20 | 20 | 20 |
|---|
| Common stock, par value of $0.001; Shares authorized: 100,000,000 at December 31, 2021 and 2020; Shares issued and outstanding: 7,832,644 and 4,778,263 at December 31, 2022 and 2021, respectively | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
|---|
| Additional paid-in capital | 212 | 257 | 266 | 338 | 355 | 380 | 394 | 407 |
|---|
| Accumulated deficit | -196 | -252 | -301 | -329 | -348 | -367 | -385 | -402 |
|---|
| Total stockholders’ equity | 16 | 4 | -36 | 9 | 7 | 13 | 10 | 4 |
|---|
| Total liabilities and stockholders’ equity | 54 | 54 | 15 | 24 | 24 | 33 | 29 | 24 |
|---|