| Revenue | 12/31/2018 | 12/31/2017 | 12/31/2016 | 12/31/2015 |
| Total Revenue | 130,863,000 | 126,034,000 | 125,980,000 | 131,620,000 |
| Cost of Revenue | 55,205,000 | 52,892,000 | 52,701,000 | 52,557,000 |
| Gross Profit | 75,658,000 | 73,142,000 | 73,279,000 | 79,063,000 |
| Operating Expenses |
| Research Development | - | - | - | - |
| Selling General and Administrative | 23,073,000 | 28,099,000 | 32,515,000 | 32,496,000 |
| Non Recurring | - | - | - | - |
| Others | - | - | - | - |
| Total Operating Expenses | 95,658,000 | 97,721,000 | 101,144,000 | 101,070,000 |
| Operating Income or Loss | 35,205,000 | 28,313,000 | 24,836,000 | 30,550,000 |
| Income from Continuing Operations |
| Total Other Income/Expenses Net | -15,582,000 | -7,719,000 | -3,850,000 | -2,310,000 |
| Earnings Before Interest and Taxes | 35,205,000 | 28,313,000 | 24,836,000 | 30,550,000 |
| Interest Expense | -4,833,000 | -4,733,000 | -4,376,000 | -4,920,000 |
| Income Before Tax | 19,623,000 | 20,594,000 | 20,986,000 | 28,240,000 |
| Income Tax Expense | 3,584,000 | -9,956,000 | 7,378,000 | 9,865,000 |
| Minority Interest | 1,565,000 | 1,591,000 | 1,508,000 | 1,414,000 |
| Net Income From Continuing Ops | 16,039,000 | 30,550,000 | 13,608,000 | 18,375,000 |
| Non-recurring Events |
| Discontinued Operations | - | - | - | - |
| Extraordinary Items | - | - | - | - |
| Effect Of Accounting Changes | - | - | - | - |
| Other Items | - | - | - | - |
| Net Income |
| Net Income | 15,528,000 | 30,101,000 | 13,127,000 | 17,879,000 |
| Preferred Stock And Other Adjustments | - | - | - | - |
| Net Income Applicable To Common Shares | 15,528,000 | 30,101,000 | 13,127,000 | 17,879,000 |