Consolidated key figures
| € thsd. | 2017 | 2016 | 2015 |
| Revenue | 134,295 | 112,935 | 88,962 |
| Total operating performance | 141,246 | 139,638 | 140,986 |
| EBITDA | 26,436 | 41,224 | 50,107 |
| EBIT | 25,181 | 37,956 | 42,859 |
| EBT | 25,231 | 36,511 | 19,604 |
| Net profit | 17,178 | 25,951 | 1,346 |
| Earnings per share (€) | 2.05 | 3.09 | 0.16 |
| Dividend per share (€) | 2.80 | 2.80 | |
| Cash flow from operating activities | 13,406 | 33,741 | 27,285 |
| Cash flow from investing activities | (511) | (3,258) | (4,287) |
| Amortization/depreciation on intangible assets and property, plant and equipment | 1,255 | 2,166 | 7,153 |
| EBIT margin (%) | 18.8 | 33.6 | 48.2 |
| Net operating margin (%) | 12.8 | 23.0 | 1.5 |
| Return on equity (%) | 16.1 | 26.6 | 1.4 |
| Number of employees at year-end | 274 | 250 | 257 |
| Personnel expenses (€ thsd.) | (28,630) | (26,705) | (25,434) |
