Investments (Non-Cash OTTI Credit Losses Recognized in Earnings) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Investments [Abstract]
Balance of credit-related OTTI, beginning	$ 12,416	$ 13,262	$ 12,583	$ 13,422
Reduction for increases in cash flows expected to be collected	(173)	(171)	(340)	(331)
Balance of credit-related OTTI, ending	$ 12,243	$ 13,091	$ 12,243	$ 13,091