Insurance Reserves and Policyholder Funds, Incurred Paid Claims Reconciliation (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net outstanding liabilities [Abstract]
Liabilities for unpaid losses, claims and loss adjustment expenses, net of reinsurance	$ 59,669
Reinsurance recoverable on unpaid losses [Abstract]
Total reinsurance recoverable on unpaid losses	17,600	$ 18,339
Unallocated claims adjustment expenses	1,878
Total gross liability for unpaid losses, claims and loss adjustment expenses	79,147	$ 81,448	$ 72,612
Medicare Supplement [Member]
Net outstanding liabilities [Abstract]
Liabilities for unpaid losses, claims and loss adjustment expenses, net of reinsurance	12,900
Reinsurance recoverable on unpaid losses [Abstract]
Total reinsurance recoverable on unpaid losses	8,975
Automobile Liability [Member]
Net outstanding liabilities [Abstract]
Liabilities for unpaid losses, claims and loss adjustment expenses, net of reinsurance	36,784
Reinsurance recoverable on unpaid losses [Abstract]
Total reinsurance recoverable on unpaid losses	6,260
Automobile Physical Damage [Member]
Net outstanding liabilities [Abstract]
Liabilities for unpaid losses, claims and loss adjustment expenses, net of reinsurance	1,964
Reinsurance recoverable on unpaid losses [Abstract]
Total reinsurance recoverable on unpaid losses	3
General Liability [Member]
Net outstanding liabilities [Abstract]
Liabilities for unpaid losses, claims and loss adjustment expenses, net of reinsurance	3,415
Reinsurance recoverable on unpaid losses [Abstract]
Total reinsurance recoverable on unpaid losses	2,362
Surety [Member]
Net outstanding liabilities [Abstract]
Liabilities for unpaid losses, claims and loss adjustment expenses, net of reinsurance	2,940
Other Short-Duration Insurance Lines [Member]
Net outstanding liabilities [Abstract]
Liabilities for unpaid losses, claims and loss adjustment expenses, net of reinsurance	$ 1,666