Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Deferred tax assets
Unpaid loss discount	$ 45,733	$ 49,189
Unearned premium adjustment	21,319	22,031
Compensation related	15,209	11,505
Unrealized losses on investments, net	47,679	56,229
Basis differentials-investments	3,578	2,018
Intangibles	5,340	7,158
Operating lease liabilities	3,592	3,539
Tax credit carryforward	47,187	53,154
Net operating loss carryforward	22,792	30,488
Other	0	1,547
Total gross deferred tax assets	212,429	236,858
Valuation allowance	(20,754)	(20,078)
Total deferred tax assets, net of valuation allowance	191,675	216,780
Deferred tax liabilities
Deferred policy acquisition costs	(13,064)	(13,051)
Unpaid loss discount-transition	(1,259)	(3,265)
Fixed assets	(1,804)	(2,720)
Operating lease ROU assets	(3,409)	(3,350)
Basis differentials-foreign operations	(1,690)	(1,386)
Intangibles	(5,693)	(6,844)
Other	(828)	0
Total deferred tax liabilities	(27,747)	(30,616)
Net deferred tax assets (liabilities)	$ 163,928	$ 186,164