Liabilities for Unpaid Losses, Claims and Loss Adjustment Expenses (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Liabilities for Unpaid Losses, Claims and Loss Adjustment Expenses [Roll Forward]
Beginning liabilities for unpaid losses, claims and loss adjustment expenses, gross				$ 62,562
Paid related to [Abstract]
Ending liabilities for unpaid losses, claims and loss adjustment expenses, gross		$ 67,184		67,184
Reconciliation of total incurred claims to total insurance benefits and losses incurred [Abstract]
Total incurred losses				83,454	$ 75,840
Cash surrender value and matured endowments				1,167	1,037
Benefit reserve changes				2,825	1,825
Total insurance benefits and losses incurred		30,417	$ 26,955	87,446	78,702
Property and Casualty Insurance Products [Member]
Liabilities for Unpaid Losses, Claims and Loss Adjustment Expenses [Roll Forward]
Beginning liabilities for unpaid losses, claims and loss adjustment expenses, gross				49,556	51,200
Less: Reinsurance recoverable on unpaid losses				(9,806)	(11,639)
Beginning liabilities for unpaid losses, claims and loss adjustment expenses, net				39,750	39,561
Incurred related to [Abstract]
Current accident year				27,359	26,534
Prior accident year development	[1]			(1,480)	(1,296)
Total incurred				25,879	25,238
Paid related to [Abstract]
Current accident year				9,858	9,799
Prior accident years				13,720	15,950
Total paid				23,578	25,749
Ending liabilities for unpaid losses, claims and loss adjustment expenses, net		42,051	39,050	42,051	39,050
Plus: Reinsurance recoverable on unpaid losses		9,455	9,234	9,455	9,234
Ending liabilities for unpaid losses, claims and loss adjustment expenses, gross		51,506	48,284	51,506	48,284
Medicare Supplement Insurance Products [Member]
Liabilities for Unpaid Losses, Claims and Loss Adjustment Expenses [Roll Forward]
Beginning liabilities for unpaid losses, claims and loss adjustment expenses, gross				11,263	10,547
Less: Reinsurance recoverable on unpaid losses				(990)	0
Beginning liabilities for unpaid losses, claims and loss adjustment expenses, net				10,273	10,547
Incurred related to [Abstract]
Current accident year				50,733	46,295
Prior accident year development				720	(1,009)
Total incurred				51,453	45,286
Paid related to [Abstract]
Current accident year				40,801	35,986
Prior accident years				10,445	9,267
Total paid				51,246	45,253
Ending liabilities for unpaid losses, claims and loss adjustment expenses, net		10,480	10,580	10,480	10,580
Plus: Reinsurance recoverable on unpaid losses		3,640	0	3,640	0
Ending liabilities for unpaid losses, claims and loss adjustment expenses, gross		14,120	10,580	14,120	10,580
Other Life and Health Insurance Products [Member]
Liabilities for Unpaid Losses, Claims and Loss Adjustment Expenses [Roll Forward]
Beginning liabilities for unpaid losses, claims and loss adjustment expenses, gross				1,743	2,123
Less: Reinsurance recoverable on unpaid losses				0	0
Beginning liabilities for unpaid losses, claims and loss adjustment expenses, net				1,743	2,123
Incurred related to [Abstract]
Current accident year				6,226	5,489
Prior accident year development				(104)	(173)
Total incurred				6,122	5,316
Paid related to [Abstract]
Current accident year				4,807	4,206
Prior accident years				1,500	1,494
Total paid				6,307	5,700
Ending liabilities for unpaid losses, claims and loss adjustment expenses, net		1,558	1,739	1,558	1,739
Plus: Reinsurance recoverable on unpaid losses		0	0	0	0
Ending liabilities for unpaid losses, claims and loss adjustment expenses, gross		$ 1,558	$ 1,739	$ 1,558	$ 1,739

[1] In establishing property and casualty reserves, the Company initially reserves for losses at the higher end of the reasonable range if no other value within the range is determined to be more probable. Selection of such an initial loss estimate is an attempt by management to give recognition that initial claims information received generally is not conclusive with respect to legal liability, is generally not comprehensive with respect to magnitude of loss and generally, based on historical experience, will develop more adversely as time passes and more information becomes available. However, as a result, the Company generally experiences reserve redundancies when analyzing the development of prior year losses in a current period.