Insurance Reserves and Policyholder Funds, Incurred Paid Claims Reconciliation (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net outstanding liabilities [Abstract]
Liabilities for unpaid losses, claims and loss adjustment expenses, net of reinsurance	$ 60,992
Reinsurance recoverable on unpaid losses [Abstract]
Total reinsurance recoverable on unpaid losses	18,339	$ 14,354
Unallocated claims adjustment expenses	2,117
Total gross liability for unpaid losses, claims and loss adjustment expenses	81,448	$ 72,612	$ 65,689
Medicare Supplement [Member]
Net outstanding liabilities [Abstract]
Liabilities for unpaid losses, claims and loss adjustment expenses, net of reinsurance	16,614
Reinsurance recoverable on unpaid losses [Abstract]
Total reinsurance recoverable on unpaid losses	10,620
Automobile Liability [Member]
Net outstanding liabilities [Abstract]
Liabilities for unpaid losses, claims and loss adjustment expenses, net of reinsurance	35,165
Reinsurance recoverable on unpaid losses [Abstract]
Total reinsurance recoverable on unpaid losses	5,566
Automobile Physical Damage [Member]
Net outstanding liabilities [Abstract]
Liabilities for unpaid losses, claims and loss adjustment expenses, net of reinsurance	2,187
Reinsurance recoverable on unpaid losses [Abstract]
Total reinsurance recoverable on unpaid losses	143
General Liability [Member]
Net outstanding liabilities [Abstract]
Liabilities for unpaid losses, claims and loss adjustment expenses, net of reinsurance	3,038
Reinsurance recoverable on unpaid losses [Abstract]
Total reinsurance recoverable on unpaid losses	2,010
Surety [Member]
Net outstanding liabilities [Abstract]
Liabilities for unpaid losses, claims and loss adjustment expenses, net of reinsurance	2,945
Other Short-Duration Insurance Lines [Member]
Net outstanding liabilities [Abstract]
Liabilities for unpaid losses, claims and loss adjustment expenses, net of reinsurance	$ 1,043