Retirement Benefit Plans (Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Loss)) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
U.S. Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Actuarial loss	$ (11,503)	$ 3,131	$ 6,972
Amortization of actuarial loss	(1,822)	(2,772)	(2,326)
Prior-service credit	(1,331)	0	0
Amortization of prior service credit	47	100	99
Curtailment gain	1,701	0	0
Total recognized in other comprehensive (income) loss	(12,908)	459	4,745
Non-U.S. Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Actuarial loss	(735)	45	1,218
Amortization of actuarial loss	(121)	(131)	(53)
Total recognized in other comprehensive (income) loss	(856)	(86)	1,165
Other Postretirement Benefit Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Actuarial loss	16	295	15
Amortization of actuarial loss	(52)	(40)	(27)
Amortization of prior service credit	107	156	160
Total recognized in other comprehensive (income) loss	$ 71	$ 411	$ 148