Reinsurance (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Effects of reinsurance on premiums and benefits
Premiums written and contract deposits, Gross Amount	$ 328,525	$ 312,351	$ 893,125	$ 838,615
Premiums written and contract deposits, Ceded to Other Companies	6,668	7,162	20,011	22,074
Premiums written and contract deposits, Assumed from Other Companies	889	844	2,300	2,273
Premiums written and contract deposits, Net Amount	322,746	306,033	875,414	818,814
Premiums and contract charges earned, Gross Amount	184,770	179,969	551,672	534,621
Premiums and contract charges earned, Ceded to Other Companies	6,677	7,094	20,463	22,455
Premiums and contract charges earned, Assumed from Other Companies	937	886	2,362	2,314
Premiums and contract charges earned, Net Amount	179,030	173,761	533,571	514,480
Benefits, claims and settlement expenses, Gross Amount	122,883	114,261	366,923	351,274
Benefits, claims and settlement expenses, Ceded to Other Companies	6,451	2,602	12,580	7,251
Benefits, claims and settlement expenses, Assumed from Other Companies	1,011	1,042	2,246	2,142
Benefits, claims and settlement expenses, Net Amount	$ 117,443	$ 112,701	$ 356,589	$ 346,165