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Inventories (Inventories) (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Inventories [Abstract]    
Components $ 12,739 $ 10,929
Work in process 6,453 5,575
Finished products [1] 10,386 9,622
Total inventories 29,578 26,126
Current assets 27,599 24,650
Long term assets $ 1,979 $ 1,476
[1] includes systems at customer locations not yet sold, as of December 31, 2015 and 2014, in the amount of $4,612 and $4,532 respectively.