Nature of Operations and Basis of Presentation - Deferred Policy Acquisition Costs (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2024 USD ($)
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Recorded asset at beginning of period	$ 126,532
Underwriting costs deferred	150,591
Amortization of deferred policy acquisition costs	(133,079)
Recorded asset at June 30, 2024	$ 144,044