| In millions, except per share items | Dec-31-21 | Dec-31-20 | Dec-31-19 | Dec-31-18 |
| | 10-K | 10-K | S-1 | S-1 |
| REVENUE: | | | | |
| Revenue from contract with customer | 619.1 | 499.5 | 239.9 | 204.7 |
| Revenue from contract with customer growth | 23.9% | 108.2% | 17.2% | |
| Earned premium | 295.8 | 220.5 | 157.4 | 97.0 |
| Total revenue | 619.1 | 499.5 | 239.9 | 204.7 |
| Total revenue growth | 23.9% | 108.2% | 17.2% | |
| OPERATING EXPENSES: | | | | |
| Salaries and benefits | 171.9 | 137.5 | | |
| Ceding commission | 141.0 | 106.0 | | |
| Losses and loss adjustment expenses | 122.1 | 91.0 | | |
| Sales expense | 107.5 | 86.2 | | |
| General and administrative services | 64.6 | 51.2 | 39.0 | 30.8 |
| Depreciation and amortization | 22.1 | 11.8 | | |
| Total operating expenses | 629.1 | 483.7 | | |
| OPERATING INCOME (LOSS) | -10.1 | 15.8 | 10.8 | 8.6 |
| Operating margin | -1.6% | 3.2% | | |
| Change in fair value of warrant liabilities | -42.5 | | | |
| Interest and other income (expense) | -2.0 | -1.0 | 0.6 | 0.0 |
| INCOME (LOSS) BEFORE INCOME TAX EXPENSE | -54.6 | 14.9 | 11.5 | 8.6 |
| Income tax benefit (expense) | -6.8 | -4.8 | | |
| Tax rate | | 32.4% | 0.0% | 0.0% |
| NET INCOME (LOSS) | -61.4 | 10.0 | | |
| Net loss (income) attributable to non-controlling interest | -0.4 | 0.1 | | |
| NET INCOME (LOSS) ATTRIBUTABLE TO CLASS A COMMON STOCKHOLDERS | -46.4 | 10.2 | 4.2 | 8.5 |
| |
| Earnings (loss) per share of Class A Common Stock: | | | | |
| Basic (in dollars per share) | | | | |
| Diluted (in dollars per share) | | | | |
| Weighted-average shares of Class A Common Stock outstanding: | | | | |
| Basic (in shares) | | | | |
| Diluted (in shares) | | | | |