Investments, Gain (Loss) on Investments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Gain (Loss) on Investments [Line Items]
Net realized investment gains (losses) on investments	$ 166	$ 522	$ 26,493	$ 291
Gross realized gains, gross realized losses and impairment losses [Abstract]
Gains on sales	785	1,307	27,991	2,112
Losses on sales	(619)	(785)	(1,498)	(1,821)
Total net realized gains (losses)	166	522	26,493	291
Fixed Maturities [Member]
Gain (Loss) on Investments [Line Items]
Net realized investment gains (losses) on investments	161	360	26,485	126
Gross realized gains, gross realized losses and impairment losses [Abstract]
Total net realized gains (losses)	161	360	26,485	126
Equity Securities [Member]
Gain (Loss) on Investments [Line Items]
Net realized investment gains (losses) on investments	5	162	8	165
Gross realized gains, gross realized losses and impairment losses [Abstract]
Total net realized gains (losses)	$ 5	$ 162	$ 8	$ 165