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Note 12 - Segment Data (Details) - Financial Information From Reportable Segments - Balance Sheet (USD $)
In Thousands, unless otherwise specified
Jun. 29, 2014
Dec. 31, 2013
Total assets:    
Assets $ 169,872 $ 146,283
Industrial Group [Member]
   
Total assets:    
Assets 127,746 100,593
Electronics Group [Member]
   
Total assets:    
Assets 31,159 29,689
General, Corporate and Other [Member]
   
Total assets:    
Assets $ 10,967 $ 16,001