| Revenue | 12/31/2018 | 12/31/2017 | 12/31/2016 | 12/31/2015 |
| Total Revenue | 45,743,000 | 45,794,000 | 42,679,000 | 43,455,000 |
| Cost of Revenue | 43,461,000 | 43,994,000 | 40,271,000 | 40,738,000 |
| Gross Profit | 2,282,000 | 1,800,000 | 2,408,000 | 2,717,000 |
| Operating Expenses |
| Research Development | - | - | - | - |
| Selling General and Administrative | 1,346,000 | 1,354,000 | 1,278,000 | 1,415,000 |
| Non Recurring | - | - | - | - |
| Others | -3,000 | -16,000 | -16,000 | -16,000 |
| Total Operating Expenses | 44,804,000 | 45,332,000 | 41,549,000 | 42,153,000 |
| Operating Income or Loss | 939,000 | 462,000 | 1,130,000 | 1,302,000 |
| Income from Continuing Operations |
| Total Other Income/Expenses Net | -483,000 | -232,000 | -134,000 | -251,000 |
| Earnings Before Interest and Taxes | 939,000 | 462,000 | 1,130,000 | 1,302,000 |
| Interest Expense | -339,000 | -263,000 | -234,000 | -260,000 |
| Income Before Tax | 456,000 | 230,000 | 996,000 | 1,051,000 |
| Income Tax Expense | 179,000 | 56,000 | 220,000 | 296,000 |
| Minority Interest | 629,000 | 209,000 | 199,000 | 248,000 |
| Net Income From Continuing Ops | 277,000 | 174,000 | 776,000 | 755,000 |
| Non-recurring Events |
| Discontinued Operations | 10,000 | 10,000 | -9,000 | 35,000 |
| Extraordinary Items | - | - | - | - |
| Effect Of Accounting Changes | - | - | - | - |
| Other Items | - | - | - | - |
| Net Income |
| Net Income | 267,000 | 160,000 | 745,000 | 791,000 |
| Preferred Stock And Other Adjustments | - | - | - | - |
| Net Income Applicable To Common Shares | 233,000 | 126,000 | 709,000 | 738,000 |