Investments (Details 3) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Schedule of Available-for-sale Securities [Line Items]
Total	$ (17)	$ 2,033	$ (2,473)	$ (1,678)
Fixed maturity securities
Schedule of Available-for-sale Securities [Line Items]
Gross realized gains	130	29	1,417	423
Gross realized losses	(72)	(91)	(736)	(1,503)
Total	58	(62)	681	(1,080)
Bank loan participations:
Schedule of Available-for-sale Securities [Line Items]
Gross realized gains	421	736	953	1,714
Gross realized losses	(496)	(3)	(4,150)	(981)
Total	$ (75)	$ 733	$ (3,197)	733
Equity securities
Schedule of Available-for-sale Securities [Line Items]
Gross realized gains				88
Gross realized losses				(842)
Total				(754)
Short-term investments and other
Schedule of Available-for-sale Securities [Line Items]
Gross realized gains	$ 4	$ 1,362	$ 52	1,362
Gross realized losses	$ (4)		(9)	(1,939)
Total		$ 1,362	$ 43	$ (577)