Historical Loss and LAE Development - Schedule of Reconciliation of Unpaid Losses and Settlement Expenses (LAE) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Unpaid losses and LAE at beginning of year
Gross	$ 2,315,637	$ 2,043,555
Ceded	(740,089)	(608,086)
Net	1,575,548	1,435,469
Increase (decrease) in incurred losses and LAE
Current accident year	339,951	293,158
Prior accident years	(71,520)	(69,720)
Total incurred	268,431	223,438
Loss and LAE payments for claims incurred
Current accident year	(30,978)	(21,628)
Prior accident years	(172,282)	(153,490)
Total paid	(203,260)	(175,118)
Net unpaid losses and LAE at end of year	1,640,719	1,483,789
Unpaid losses and LAE at end of year
Gross	2,361,577	2,150,519
Ceded	(720,858)	(666,730)
Net unpaid losses and LAE at end of year	$ 1,640,719	$ 1,483,789