Funds Held - Directly Managed Realized and Unrealized (Losses) Gains - (Details) - Funds held directly managed [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule of Net Realized and Unrealized Investment (Losses) Gains
Net realized and unrealized investment (losses) gains on funds held – directly managed	$ (5,627)	$ 3,433	$ (21,792)
Fixed maturities and short term investments [Member]
Schedule of Net Realized and Unrealized Investment (Losses) Gains
Net realized investment gains (losses) on funds-held directly managed	64	1,959	6,021
Change in net unrealized investment gains (losses) on funds-held directly managed	(5,774)	1,938	(24,176)
Other invested assets funds held directly managed [Member]
Schedule of Net Realized and Unrealized Investment (Losses) Gains
Net realized investment gains (losses) on funds-held directly managed	472	53	19
Change in net unrealized investment gains (losses) on funds-held directly managed	$ (389)	$ (517)	$ (3,656)