| Revenue | 12/31/2018 | 12/31/2017 | 12/31/2016 | 12/31/2015 |
| Total Revenue | 9,823,000 | 9,048,000 | 8,386,000 | 7,477,000 |
| Cost of Revenue | 2,795,000 | 2,606,000 | 2,447,000 | 2,176,000 |
| Gross Profit | 7,028,000 | 6,442,000 | 5,939,000 | 5,301,000 |
| Operating Expenses |
| Research Development | 1,052,000 | 997,000 | 920,000 | 876,000 |
| Selling General and Administrative | 3,474,000 | 3,281,000 | 3,083,000 | 2,847,000 |
| Non Recurring | - | - | - | - |
| Others | - | - | - | - |
| Total Operating Expenses | 7,920,000 | 7,449,000 | 6,995,000 | 6,394,000 |
| Operating Income or Loss | 1,903,000 | 1,599,000 | 1,391,000 | 1,083,000 |
| Income from Continuing Operations |
| Total Other Income/Expenses Net | -481,000 | -667,000 | -1,214,000 | -1,733,000 |
| Earnings Before Interest and Taxes | 1,903,000 | 1,599,000 | 1,391,000 | 1,083,000 |
| Interest Expense | -241,000 | -229,000 | -233,000 | -284,000 |
| Income Before Tax | 1,422,000 | 932,000 | 177,000 | -650,000 |
| Income Tax Expense | -249,000 | 828,000 | -170,000 | -411,000 |
| Minority Interest | - | - | - | - |
| Net Income From Continuing Ops | 1,671,000 | 104,000 | 347,000 | -239,000 |
| Non-recurring Events |
| Discontinued Operations | - | - | - | - |
| Extraordinary Items | - | - | - | - |
| Effect Of Accounting Changes | - | - | - | - |
| Other Items | - | - | - | - |
| Net Income |
| Net Income | 1,671,000 | 104,000 | 347,000 | -239,000 |
| Preferred Stock And Other Adjustments | - | - | - | - |
| Net Income Applicable To Common Shares | 1,671,000 | 104,000 | 347,000 | -239,000 |