Reinsurance (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Effects of reinsurance on premiums and benefits
Premiums written and contract deposits, Gross Amount	$ 298,163	$ 274,199	$ 564,600	$ 526,264
Premiums written and contract deposits, Ceded to Other Companies	6,712	7,509	13,343	14,912
Premiums written and contract deposits, Assumed from Other Companies	942	1,013	1,411	1,429
Premiums written and contract deposits, Net Amount	292,393	267,703	552,668	512,781
Premiums and contract charges earned, Gross Amount	185,169	178,344	366,902	354,652
Premiums and contract charges earned, Ceded to Other Companies	6,893	7,697	13,786	15,361
Premiums and contract charges earned, Assumed from Other Companies	862	914	1,425	1,428
Premiums and contract charges earned, Net Amount	179,138	171,561	354,541	340,719
Benefits, claims and settlement expenses, Gross Amount	129,163	122,835	244,040	237,013
Benefits, claims and settlement expenses, Ceded to Other Companies	2,684	2,718	6,129	4,649
Benefits, claims and settlement expenses, Assumed from Other Companies	679	648	1,235	1,100
Benefits, claims and settlement expenses, Net Amount	$ 127,158	$ 120,765	$ 239,146	$ 233,464