Allowance for Expected Credit Losses (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025
Allowance For Expected Credit Losses
Premium Receivable, Beginning Balance	$ 0	$ 26
Reinsurance Recoverable, Beginning Balance	30	75
Total Credit Loss Allowances, Beginning Balance	30	101
Premium Receivable, Provision for (reversal of) expected credit losses	1	(23)
Reinsurance Recoverable, Provision for (reversal of) expected credit losses	(8)	(36)
Total Provision for (reversal of) expected credit losses	(7)	(59)
Premium Receivable, Allowance for Credit Loss, Writeoff	(1)	(3)
Reinsurance recoverable, allowance for credit loss, writeoff	0	0
Total Credit Loss Allowance Writeoffs	(1)	(3)
Premium Receivable, Ending Balance	0	0
Reinsurance Recoverable, Ending Balance	22	39
Total Credit Loss Allowances, Ending Balance	$ 22	$ 39