Related Party Transactions (Tables)

12 Months Ended

Dec. 31, 2015

Related Party Transactions [Abstract]

Summary of related party transactions

(U.S. dollars in thousands)	2015		2014		2013
Reported net premiums	$	42,042	$	91,261	$	73,085
Reported net losses	$	13,246	$	38,927	$	29,042
Reported net acquisition costs	$	14,682	$	35,711	$	25,275