Investments Realized investment gains, losses and OTTI (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014 Securities	Jun. 30, 2013	Jun. 30, 2014 Securities	Jun. 30, 2013
Realized Investment Gains (Losses) [Abstract]
Gross realized gains	$ 4	$ 1,355	$ 5	$ 1,362
Gross realized losses	0	(75)	0	(75)
Total net gains from investment sales	4	1,280	5	1,287
Impairment write-downs (other-than-temporary impairments)	0	0	0	0
Net realized investment gains	$ 4	$ 1,280	$ 5	$ 1,287
Number of Securities with Other Than Temporary Impairment Losses, Investments	0		0