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Business Combinations Contigent Consideration (Details) - USD ($)
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Business Acquisition, Contingent Consideration [Line Items]        
Business Combination, Contingent Consideration, Liability $ 1,923,000 $ 1,761,000 $ 1,074,000 $ 2,289,000
Fair value of contingent consideration at inception   1,800,000    
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration Recorded in Income, Liability 162,000 (502,000) (474,000)  
Payment of contingent consideration 0 (611,000) (741,000)  
Distribution & Storage [Member]        
Business Acquisition, Contingent Consideration [Line Items]        
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High 11,288      
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, Low 0      
Business Combination, Contingent Consideration, Liability 1,923,000 1,761,000 0 0
Fair value of contingent consideration at inception 1,800,000 1,800,000    
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration Recorded in Income, Liability 162,000 (39,000) 0  
Payment of contingent consideration   0    
BioMedical [Member]        
Business Acquisition, Contingent Consideration [Line Items]        
Business Combination, Contingent Consideration, Liability 0 0 1,074,000 $ 2,289,000
Fair value of contingent consideration at inception   0    
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration Recorded in Income, Liability $ 0 (463,000) (474,000)  
Payment of contingent consideration   $ (611,000) $ (741,000)