Other Investments (Tables)

12 Months Ended

Dec. 31, 2016

Investments, All Other Investments [Abstract]

Components of other investments

Other investments comprised the following at December 31, 2016 and 2015. See Note 1(c), "Significant Accounting Policies - Total Investments - Other Investments," for a description of our accounting policy for these assets:

Year ended December 31, (U.S. dollars in thousands)	2016		2015
Hedge Funds:
Arbitrage	$	165,053	$	205,117
Directional	159,701		276,277
Event Driven	2,877		5,427
Multi-Style	4,341		57,249
Total hedge funds	$	331,972	$	544,070
Private investment funds	175,579		244,576
Overseas deposits	493,594		479,187
Structured transactions	142,698		138,608
Other	20,721		26,616
Total other investments	$	1,164,564	$	1,433,057

Analysis of net realized and unrealized gains

The following represents an analysis of the net realized gains for the indicated years ended December 31, and the net unrealized gains as of December 31, on the Company’s hedge funds and private investment funds:

Year ended December 31, (U.S. dollars in thousands)	Net Unrealized Gains (Losses)				Net Realized Gains (Losses)
	2016		2015		2016		2015		2014
Hedge funds	$	134,114	$	188,698	$	12,212	$	12,769	$	6,685
Private investment funds	36,775		38,340		8,636		9,342		13,275
Total	$	170,889	$	227,038	$	20,848	$	22,111	$	19,960