Goodwill and Other Intangible Assets (Schedule of Changes in Intangible Assets and Goodwill) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Amortized intangible assets:
Beginning balance	$ 848	$ 1,079
Amortization	(232)	(231)
Currency Translation
Ending balance	616	848
Goodwill
Beginning balance	76,522	75,469
Amortization
Currency translation	2,368	1,053
Ending balance	78,890	76,522
AEC Trade Names [Member]
Amortized intangible assets:
Beginning balance	38	43
Amortization	(5)	(5)
Currency Translation
Ending balance	33	38
AEC Customer Contracts [Member]
Amortized intangible assets:
Beginning balance	606	808
Amortization	(202)	(202)
Currency Translation
Ending balance	404	606
AEC Technology [Member]
Amortized intangible assets:
Beginning balance	204	228
Amortization	(25)	(24)
Currency Translation
Ending balance	$ 179	$ 204