Discontinued Operations - Schedule of Assets & Liabilities IIC (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025	Apr. 01, 2025	Mar. 31, 2025	Dec. 31, 2024
ASSETS
Fixed maturities, available-for-sale	$ 254,123	$ 253,152
Other investments	41,658	40,053
Cash and cash equivalents	117,013	198,762
Accrued investment income	3,096	3,156
Premiums receivable, net	76,719	70,447
Reinsurance recoverable on paid and unpaid losses, net	112,057	128,205
Ceded unearned premiums	90,722	109,697
Deferred policy acquisition costs, net	39,952	37,815
Intangible assets, net	2,861	3,471
Other assets	11,987	11,998
LIABILITIES
Unpaid losses and loss adjustment expenses	126,990	165,701		$ 256,289	$ 322,087
Unearned premiums	257,878	249,616
Reinsurance payable on premiums	42,491	66,841
Accounts payable and accrued expenses	80,434	112,781
Operating lease liability	3,077	3,135
Other liabilities	$ 5,002	$ 7,740
Discontinued Operations | Interboro Insurance
ASSETS
Fixed maturities, available-for-sale			$ 40,925
Other investments			988
Cash and cash equivalents			21,206
Accrued investment income			297
Premiums receivable, net			3,174
Reinsurance recoverable on paid and unpaid losses, net			265
Ceded unearned premiums			2,004
Deferred policy acquisition costs, net			4,462
Intangible assets, net			775
Other assets			488
Total assets			74,584
LIABILITIES
Unpaid losses and loss adjustment expenses			21,391
Unearned premiums			23,574
Payments outstanding			2,223
Accounts payable and accrued expenses			101
Operating lease liability			65
Other liabilities			1,402
Total liabilities			$ 48,756