CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - UNAUDITED - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Cash flows from operating activities:
Net income (loss)	$ 8.8	$ (123.4)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Share-based compensation	12.7	12.4
Warrant compensation expense	3.8	13.3
Depreciation and amortization	12.1	8.2
Bad debt expense	22.7	10.6
Gain on lease modification	0.0	(0.3)
Changes in operating assets and liabilities:
Premiums receivable	(84.3)	(83.9)
Reinsurance recoverable and receivable	(35.3)	8.5
Prepaid reinsurance premiums	10.4	38.1
Other assets	(23.1)	10.6
Losses and loss adjustment expenses reserves	108.2	(30.9)
Unearned premiums	70.7	82.4
Reinsurance premiums payable	(8.2)	(48.0)
Accounts payable and accrued expenses	(1.9)	9.6
Other liabilities	29.9	13.1
Net cash provided by (used in) operating activities	126.5	(79.7)
Cash flows from investing activities:
Purchases of investments	(147.7)	(61.7)
Proceeds from maturities, calls and pay downs of investments	40.5	22.3
Sales of investments	0.5	0.5
Capitalization of internally developed software	(7.0)	(7.1)
Purchases of fixed assets	(0.4)	(0.2)
Net cash used in investing activities	(114.1)	(46.2)
Cash flows from financing activities:
Taxes paid related to net share settlement of equity awards	(13.3)	(0.9)
Payment of preferred stock and related warrants issuance costs	(3.0)	0.0
Net cash used in financing activities	(16.3)	(0.9)
Net decrease in cash, cash equivalents and restricted cash	(3.9)	(126.8)
Cash, cash equivalents and restricted cash at beginning of period	679.7	763.1
Cash, cash equivalents and restricted cash at end of period	$ 675.8	$ 636.3