CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue
Net earned premium	$ 172.4	$ 77.0	$ 77.3
Ceding commission income	64.1	44.9	15.3
Net investment income	8.4	1.9	1.5
Commission and other income	11.8	4.6	0.3
Total revenue	256.7	128.4	94.4
Expense
Loss and loss adjustment expense, net	167.3	71.9	54.7
Other insurance expense	44.0	24.1	14.4
Sales and marketing	138.3	141.6	80.4
Technology development	79.6	51.8	19.4
General and administrative	122.3	72.6	46.3
Total expense	551.5	362.0	215.2
Loss before income taxes	(294.8)	(233.6)	(120.8)
Income tax expense	3.0	7.7	1.5
Net loss	(297.8)	(241.3)	(122.3)
Other comprehensive loss, net of tax
Unrealized (loss) gain on investments in fixed maturities	(18.4)	(5.7)	0.1
Foreign currency translation adjustment	(5.8)	0.5	1.6
Comprehensive loss	$ (322.0)	$ (246.5)	$ (120.6)
Per share data:
Net loss per share attributable to common stockholders - basic (usd per share)	$ (4.59)	$ (3.94)	$ (3.63)
Net loss per share attributable to common stockholders - diluted (usd per share)	$ (4.59)	$ (3.94)	$ (3.63)
Weighted average common shares outstanding - basic (in shares)	64,921,524	61,224,433	33,654,828
Weighted average common shares outstanding - diluted (in shares)	64,921,524	61,224,433	33,654,828