| Revenue | 2018-12-31 | 2017-12-31 | 2016-12-31 | 2015-12-31 |
| Total Revenue | 31,856,000 | 35,410,000 | 41,863,000 | 44,294,000 |
| Cost of Revenue | 11,770,000 | 13,255,000 | 16,465,000 | 17,482,000 |
| Gross Profit | 20,086,000 | 22,155,000 | 25,398,000 | 26,812,000 |
| Operating Expenses |
| Research Development | - | - | - | - |
| Selling General and Administrative | 10,561,000 | 12,827,000 | 15,401,000 | 16,427,000 |
| Non Recurring | - | - | - | - |
| Others | 17,000 | 250,000 | 274,000 | 145,000 |
| Total Operating Expenses | 22,348,000 | 26,332,000 | 32,140,000 | 34,054,000 |
| Operating Income or Loss | 9,508,000 | 9,078,000 | 9,723,000 | 10,240,000 |
| Income from Continuing Operations |
| Total Other Income/Expenses Net | -1,158,000 | -2,336,000 | -1,587,000 | -635,000 |
| Earnings Before Interest and Taxes | 9,508,000 | 9,078,000 | 9,723,000 | 10,240,000 |
| Interest Expense | -919,000 | -841,000 | -733,000 | -856,000 |
| Income Before Tax | 8,350,000 | 6,742,000 | 8,136,000 | 9,605,000 |
| Income Tax Expense | 1,623,000 | 5,560,000 | 1,586,000 | 2,239,000 |
| Minority Interest | 2,077,000 | 1,905,000 | 158,000 | 210,000 |
| Net Income From Continuing Ops | 6,727,000 | 1,182,000 | 6,550,000 | 7,366,000 |
| Non-recurring Events |
| Discontinued Operations | -251,000 | 101,000 | 101,000 | 101,000 |
| Extraordinary Items | - | - | - | - |
| Effect Of Accounting Changes | - | - | - | - |
| Other Items | - | - | - | - |
| Net Income |
| Net Income | 6,434,000 | 1,248,000 | 6,527,000 | 7,351,000 |
| Preferred Stock And Other Adjustments | - | - | - | - |
| Net Income Applicable To Common Shares | 6,434,000 | 1,248,000 | 6,527,000 | 7,351,000 |