| Annual · values | 2021 | 2020 | 2019 | 2018 |
|---|---|---|---|---|
| Gross Margin | 71.71% | 57.42% | 62.24% | 62.68% |
| Operating Margin | 12.87% | 5.25% | 16.88% | 15.43% |
| EBITDA Margin | 34.79% | 23.27% | 34.00% | 35.71% |
| Net Margin | 18.11% | -20.12% | -3.47% | -10.48% |
| Current Ratio | — | — | — | — |
| Quick Ratio | — | — | — | — |
| Debt / Equity | -2.54 | -2.49 | -2.70 | -2.88 |
| ROE | -11.41% | 14.63% | 3.64% | 11.29% |
| ROA | 13.50% | -20.81% | -5.53% | -19.88% |
| Asset Turnover | 0.75 | 1.03 | 1.59 | 1.90 |
| Book Value / Share | -35.60 | -39.43 | -34.89 | -34.28 |