Reinsurance - Ceded and Assumed Reinsurance (Details) - Property and casualty business - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Reinsurance [Line Items]
Ceded premiums written	$ 99,732	$ 100,541	$ 88,339
Ceded premiums earned	101,740	92,650	84,924
Loss and loss settlement expenses ceded	89,102	51,878	185,653
Assumed premiums written	190,215	130,375	34,371
Assumed premiums earned	163,980	77,283	33,679
Loss and loss settlement expenses assumed	$ 104,096	$ 45,543	$ 29,141