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Business Combination
 3 Months Ended
Mar. 31, 2014
Business Combination [Abstract]  
Business Combination Disclosure [Text Block]
Business Combinations
Tamar Technology
In April 2013, the Company announced that it had acquired specific assets of Tamar Technology, located in Newbury Park, California. The acquired business has been integrated into the Company’s inspection technology group.  The impact of the acquisition was not material to the Company’s consolidated financial position or results of operations.