| Revenue | 12/31/2018 | 12/31/2017 | 12/31/2016 | 12/31/2015 |
| Total Revenue | 279,332,000 | 237,162,000 | 200,628,000 | 241,406,000 |
| Cost of Revenue | 190,752,000 | 159,053,000 | 132,759,000 | 163,605,000 |
| Gross Profit | 88,580,000 | 78,109,000 | 67,869,000 | 77,801,000 |
| Operating Expenses |
| Research Development | - | - | - | - |
| Selling General and Administrative | 12,300,000 | 11,893,000 | 11,783,000 | 10,961,000 |
| Non Recurring | - | - | - | - |
| Others | 35,230,000 | 32,459,000 | 31,375,000 | 32,834,000 |
| Total Operating Expenses | 257,793,000 | 223,088,000 | 196,092,000 | 226,971,000 |
| Operating Income or Loss | 21,539,000 | 14,074,000 | 4,536,000 | 14,435,000 |
| Income from Continuing Operations |
| Total Other Income/Expenses Net | 9,414,000 | 4,600,000 | 3,433,000 | 7,531,000 |
| Earnings Before Interest and Taxes | 21,539,000 | 14,074,000 | 4,536,000 | 14,435,000 |
| Interest Expense | -766,000 | -601,000 | -453,000 | -311,000 |
| Income Before Tax | 30,953,000 | 18,674,000 | 7,969,000 | 21,966,000 |
| Income Tax Expense | 9,532,000 | -1,174,000 | -406,000 | 5,415,000 |
| Minority Interest | 6,734,000 | 6,812,000 | 6,505,000 | 5,999,000 |
| Net Income From Continuing Ops | 21,421,000 | 19,848,000 | 8,375,000 | 16,551,000 |
| Non-recurring Events |
| Discontinued Operations | - | - | - | - |
| Extraordinary Items | - | - | - | - |
| Effect Of Accounting Changes | - | - | - | - |
| Other Items | - | - | - | - |
| Net Income |
| Net Income | 20,840,000 | 19,710,000 | 7,840,000 | 16,150,000 |
| Preferred Stock And Other Adjustments | - | - | - | - |
| Net Income Applicable To Common Shares | 20,840,000 | 19,710,000 | 7,840,000 | 16,150,000 |