Statements Of Comprehensive Income (Loss) - USD ($)
$ in Thousands |
12 Months Ended |
Dec. 31, 2019 |
Dec. 31, 2018 |
| Statements Of Comprehensive Income (Loss) [Abstract] |
|
|
| Net sales |
$ 8,258
|
$ 7,495
|
| Cost of goods sold |
3,892
|
3,448
|
| Gross profit |
4,366
|
4,047
|
| Operating expenses |
|
|
| Selling and marketing |
1,929
|
1,634
|
| General and administrative |
1,657
|
1,745
|
| Research and development |
811
|
813
|
| Total operating expenses |
4,397
|
4,192
|
| Operating loss |
(31)
|
(145)
|
| Non-operating income (expense) |
|
|
| Interest expense |
(2)
|
(1)
|
| Interest income |
209
|
120
|
| Other income |
10
|
8
|
| Total non-operating income, net |
217
|
127
|
| Income (loss) before income taxes |
186
|
(18)
|
| Income tax benefit |
(1)
|
(8)
|
| Net income (loss) |
187
|
(10)
|
| Other comprehensive income (loss) |
|
|
| Change in unrealized value of available-for-sale securities, net of income tax |
(32)
|
13
|
| Other comprehensive income (loss) |
(32)
|
13
|
| Net Comprehensive Income |
$ 155
|
$ 3
|
| Basic |
|
|
| Net income per share |
$ 0.06
|
$ 0.00
|
| Weighted average shares |
3,395,521
|
3,395,521
|
| Diluted |
|
|
| Net income per share |
$ 0.06
|
$ 0.00
|
| Weighted average shares |
3,398,035
|
3,395,521
|