Investments (Summary of Realized Gain (Loss) on Investments) (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
Schedule of Investments [Line Items]
(Loss) gain on investments	$ (23)	$ 6,950	$ 152	$ 9,723
Other-than-temporary impairment			(274)
Net realized (losses) gains	(23)	6,950	(122)	9,723
Corporate Bonds [Member]
Schedule of Investments [Line Items]
(Loss) gain on investments	(22)	21	111	846
Collateralized Corporate Bank Loans [Member]
Schedule of Investments [Line Items]
(Loss) gain on investments	10	44	99	316
Municipal Bonds [Member]
Schedule of Investments [Line Items]
(Loss) gain on investments	(69)	(50)	(123)	(11)
Mortgage Backed [Member]
Schedule of Investments [Line Items]
(Loss) gain on investments	29		31
Equity Securities [Member]
Schedule of Investments [Line Items]
(Loss) gain on investments	$ 29	$ 6,935	$ 34	$ 8,572