Other Investments (Tables)

12 Months Ended

Dec. 31, 2013

Investments, All Other Investments [Abstract]

Components of other investments

Other investments comprised the following at December 31, 2013 and 2012:

Year ended December 31, (U.S. dollars in thousands)	2013		2012
Alternative Investment Funds:
Arbitrage	$	158,220	$	278,680
Directional	357,469		254,616
Event Driven	56,873		96,451
Multi-Style	72,625		65,125
Total alternative funds	$	645,187	$	694,872
Private investment funds	94,064		89,469
Overseas deposits	111,302		96,117
Structured transactions	294,048		312,122
Other	20,029		27,299
Total other investments	$	1,164,630	$	1,219,879

Analysis of net realized and unrealized gains

The following represents an analysis of the net realized gains and the net unrealized gains on the Company’s alternative investment funds and private equity funds:

Year ended December 31, (U.S. dollars in thousands)	Net Unrealized Gains (Losses)				Net Realized Gains (Losses)
	2013		2012		2013		2012			2011
Alternative investment funds	$	158,825	$	130,702	$	30,858	$	(2,153	)	$	10,120
Private investment funds	44,027		38,518		4,331		257			3,585
Total	$	202,852	$	169,220	$	35,189	$	(1,896	)	$	13,705