Other Investments (Tables)

12 Months Ended

Dec. 31, 2012

Investments, All Other Investments [Abstract]

Components of other investments

Year ended December 31,
(U.S. dollars in thousands)		2012		2011
Alternative Investment Funds:
	Arbitrage	$	278,680	$	132,847
	Directional		254,616		228,544
	Event Driven		96,451		-
	Multi-Style		65,125		93,664
Total alternative funds		$	694,872	$	455,055
Private investment funds			89,469		87,491
Overseas deposits			96,117		91,425
Structured transactions			312,122		323,705
Other			27,299		27,586
Total other investments		$	1,219,879	$	985,262

Analysis of net realized and unrealized gains

Year ended December 31,	Net Unrealized Gains (Losses)				Net Realized Gains (Losses)
(U.S. dollars in thousands)		2012		2011		2012		2011		2010
Alternative investment funds	$	130,702	$	96,873	$	(2,153)	$	10,120	$	526
Private investment funds		38,518		33,725		257		3,585		3,049
Total	$	169,220	$	130,598	$	(1,896)	$	13,705	$	3,575

Project finance loans

Project Finance Loans
(U.S. dollars in thousands)	2012		2011
Aggregate loan value	$	36,802	$	49,650
Aggregate loan net carrying value	$	31,219	$	40,483
Opening allowance for loan losses	$	(9,167)	$	(9,167)
Amounts charged off during the period		3,584		-
Closing allowance for loan losses	$	(5,583)	$	(9,167)
Number of individual loan participations		4		6
Number of individual loan participations relating to the allowance for loan losses		1		2
Weighted average contractual term to maturity		1.0 years		2.1 years
Weighted average credit rating		BB		BB-
Range of individual credit ratings		BB+ to BB-		BB+ to CCC