Financial Schedules Schedule III - Supplemental Insurance Information (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Supplementary Insurance Information, by Segment [Line Items]
Supplementary Insurance Information, Deferred policy acquisition costs	$ 167,790	$ 163,692
Supplementary Insurance Information, Future policy benefit reserves and policy claims payable	1,139,860	1,063,077
Supplementary Insurance Information, Unearned premiums	1,154	1,206
Supplementary Insurance Information, Other policy claims and benefits payable	75,685	67,997
Life Insurance Segment [Member]
Supplementary Insurance Information, by Segment [Line Items]
Supplementary Insurance Information, Deferred policy acquisition costs	132,704	130,389
Supplementary Insurance Information, Future policy benefit reserves and policy claims payable	871,136	798,534
Supplementary Insurance Information, Unearned premiums	915	959
Supplementary Insurance Information, Other policy claims and benefits payable	73,860	66,222
Home Service Insurance Segment [Member]
Supplementary Insurance Information, by Segment [Line Items]
Supplementary Insurance Information, Deferred policy acquisition costs	35,086	33,303
Supplementary Insurance Information, Future policy benefit reserves and policy claims payable	268,724	264,543
Supplementary Insurance Information, Unearned premiums	239	247
Supplementary Insurance Information, Other policy claims and benefits payable	1,825	1,775
Other Non-Insurance Enterprise Segment [Member]
Supplementary Insurance Information, by Segment [Line Items]
Supplementary Insurance Information, Deferred policy acquisition costs	0	0
Supplementary Insurance Information, Future policy benefit reserves and policy claims payable	0	0
Supplementary Insurance Information, Unearned premiums	0	0
Supplementary Insurance Information, Other policy claims and benefits payable	$ 0	$ 0