CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenue
Net earned premium	$ 31.2	$ 16.3	$ 58.6	$ 30.1
Ceding commission income	15.5	10.6	29.5	19.6
Net investment income	1.2	0.2	2.1	0.4
Commission and other income	2.1	1.1	4.1	1.6
Total revenue	50.0	28.2	94.3	51.7
Expense
Loss and loss adjustment expense, net	28.1	13.0	52.5	29.5
Other insurance expense	9.7	5.2	18.8	10.0
Sales and marketing	37.0	33.1	75.3	62.2
Technology development	17.8	14.0	34.7	21.1
General and administrative	22.4	15.8	50.6	29.9
Total expense	115.0	81.1	231.9	152.7
Loss before income taxes	(65.0)	(52.9)	(137.6)	(101.0)
Income tax expense	2.9	2.7	5.1	3.6
Net loss	(67.9)	(55.6)	(142.7)	(104.6)
Other comprehensive loss, net of tax
Unrealized loss on investments in fixed maturities	(4.5)	(0.2)	(18.8)	(0.1)
Foreign currency translation adjustment	(5.5)	0.3	(6.6)	1.0
Comprehensive loss	$ (77.9)	$ (55.5)	$ (168.1)	$ (103.7)
Per share data:
Net loss per share attributable to common stockholders—basic (usd per share)	$ (1.10)	$ (0.90)	$ (2.31)	$ (1.72)
Net loss per share attributable to common stockholders—diluted (usd per share)	$ (1.10)	$ (0.90)	$ (2.31)	$ (1.72)
Weighted average common shares outstanding—basic (in shares)	61,816,225	61,444,958	61,757,722	60,643,764
Weighted average common shares outstanding—diluted (in shares)	61,816,225	61,444,958	61,757,722	60,643,764