| Revenue | 12/31/2018 | 12/31/2017 | 12/31/2016 | 12/31/2015 |
| Total Revenue | 10,746,000 | 9,927,000 | 9,298,000 | 8,592,000 |
| Cost of Revenue | 2,382,000 | 2,221,000 | 2,004,000 | 1,771,000 |
| Gross Profit | 8,364,000 | 7,706,000 | 7,294,000 | 6,821,000 |
| Operating Expenses |
| Research Development | 1,285,000 | 1,224,000 | 1,114,000 | 923,000 |
| Selling General and Administrative | 4,436,000 | 3,908,000 | 3,590,000 | 3,389,000 |
| Non Recurring | - | - | - | - |
| Others | 286,000 | 272,000 | 231,000 | 271,000 |
| Total Operating Expenses | 8,438,000 | 7,663,000 | 6,973,000 | 6,395,000 |
| Operating Income or Loss | 2,308,000 | 2,264,000 | 2,325,000 | 2,197,000 |
| Income from Continuing Operations |
| Total Other Income/Expenses Net | 410,000 | 11,000 | 1,326,000 | 209,000 |
| Earnings Before Interest and Taxes | 2,308,000 | 2,264,000 | 2,325,000 | 2,197,000 |
| Interest Expense | -326,000 | -292,000 | -225,000 | -144,000 |
| Income Before Tax | 2,718,000 | 2,275,000 | 3,651,000 | 2,406,000 |
| Income Tax Expense | 190,000 | 3,288,000 | -3,634,000 | 459,000 |
| Minority Interest | - | - | - | - |
| Net Income From Continuing Ops | 2,528,000 | -1,013,000 | 7,285,000 | 1,947,000 |
| Non-recurring Events |
| Discontinued Operations | 2,000 | -4,000 | -19,000 | -222,000 |
| Extraordinary Items | - | - | - | - |
| Effect Of Accounting Changes | - | - | - | - |
| Other Items | - | - | - | - |
| Net Income |
| Net Income | 2,530,000 | -1,017,000 | 7,266,000 | 1,725,000 |
| Preferred Stock And Other Adjustments | - | - | - | - |
| Net Income Applicable To Common Shares | 2,530,000 | -1,017,000 | 7,266,000 | 1,725,000 |