| Annual · values | 2021 | 2020 | 2019 | 2018 |
|---|---|---|---|---|
| Gross Margin | 53.25% | 7.12% | 29.79% | 47.54% |
| Operating Margin | 35.24% | -14.27% | 13.50% | 32.98% |
| EBITDA Margin | 63.32% | 47.50% | 60.55% | 69.62% |
| Net Margin | 13.42% | -118.04% | 1.74% | 23.87% |
| Current Ratio | — | — | — | — |
| Quick Ratio | — | — | — | — |
| Debt / Equity | -3.21 | -2.67 | 3.76 | 2.59 |
| ROE | -52.68% | 171.10% | 5.81% | 79.81% |
| ROA | 3.63% | -17.90% | 0.35% | 4.99% |
| Asset Turnover | 0.27 | 0.15 | 0.20 | 0.21 |
| Book Value / Share | -0.93 | -1.44 | 1.07 | 1.01 |