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Assets Held for Sale (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 3 Months Ended
Jun. 30, 2014
Dec. 31, 2013
Jun. 30, 2014
UNITED STATES [Member]
Mar. 31, 2014
UNITED STATES [Member]
Mar. 31, 2014
HUNGARY
Long Lived Assets Held-for-sale [Line Items]          
Assets Held-for-sale, Beginning Balance $ 1,394 $ 2,179      
Assets sold     (13) (6) (779)
Research & development equipment reclassified as held for use (333)        
Loss on exchange of assets (188)        
Change in estimated fair value of research equipment during three months ended June 30, 2014 (568)        
Assets Held-for-sale, Ending Balance $ 292 $ 2,179