Retirement Plans (Tables)

12 Months Ended

Dec. 31, 2012

Compensation And Retirement Disclosure [Abstract]

Weighted average assumptions used

Net Benefit Cost - Weighted-average assumptions for the years ended December 31	2012		2011
Discount rate		4.4%		5.6%
Expected long-term rate of return on plan assets		8.0%		8.0%
Benefit Obligation - Weighted-average assumptions at December 31
Discount rate		4.0%		4.4%

Allocation of plan assets - UK pension

	Expected		Weighted		Expected		Weighted
	Return on		Value at		Return on		Value at
	Assets for		December 31,		Assets for		December 31,
(U.S. dollars in thousands, except percentages)	2012		2012		2011		2011
Equities		6.8%	$	6,149		7.0%	$	6,351
Gilts		3.0%		1,700		4.0%		1,350
Corporate Bonds		4.7%		1,566		5.5%		1,381
Other (cash)		3.5%		68		4.0%		12
Total market value of assets			$	9,483			$	9,094

Change in projected benefit obligation

Change in projected benefit obligation:
(U.S. dollars in thousands)	2012		2011
Projected benefit obligation - beginning of year	$	72,267	$	66,327
Service cost (1)		1,291		919
Interest cost		3,557		3,393
Actuarial (gain)/loss		7,922		3,837
Benefits and expenses paid		(2,069)		(1,612)
Foreign currency (gains)/losses		1,086		(597)
Settlements		(971)		-
Projected benefit obligation - end of year	$	83,083	$	72,267

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(1)Service costs include cost of living adjustments on curtailed plans.

Change in plan assets

Change in plan assets:
(U.S. dollars in thousands)	2012		2011
Fair value of plan assets - beginning of year	$	34,956	$	33,294
Actual return on plan assets		3,101		969
Employer contributions		2,133		1,941
Benefits and expenses paid		(1,258)		(1,132)
Foreign currency gains/(losses)		381		(117)
Fair value of plan assets - end of year	$	39,313	$	34,955
Funded status - end of year	$	(43,770)	$	(37,312)
Accrued pension liability	$	43,770	$	37,312

Components of net benefit cost

Components of net benefit cost:
(U.S. dollars in thousands)	2012		2011
Service cost	$	1,291	$	919
Interest cost		3,557		3,337
Expected return on plan assets		(3,028)		(1,558)
Amortization of net actuarial loss		915		373
Transfer from AOCI		3,363		-
Net benefit cost	$	6,098	$	3,071