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Business Combinations Contingent Consideration (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Business Combination, Contingent Consideration, Liability, Beginning Balance     $ 1,074,000  
Business Combination, Contingent Consideration Arrangements, Inception Amount Recorded During Reporting Period     1,800,000  
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration Recorded in Income, Liability $ 86,000 $ 63,000 (377,000) [1],[2] $ 187,000
Payment of contingent consideration     (611,000) (741,000)
Business Combination, Contingent Consideration, Liability, Ending Balance 1,886,000   1,886,000  
Thermax [Member] | Minimum [Member]        
Business Acquisition, Contingent Consideration, Potential Cash Payment 0   0  
Thermax [Member] | Maximum [Member]        
Business Acquisition, Contingent Consideration, Potential Cash Payment 11,288   11,288  
BioMedical [Member]        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Business Combination, Contingent Consideration, Liability, Beginning Balance     1,074,000  
Business Combination, Contingent Consideration Arrangements, Inception Amount Recorded During Reporting Period     0  
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration Recorded in Income, Liability 0 63,000 (463,000) [1],[2] 187,000
Payment of contingent consideration     (611,000)  
Business Combination, Contingent Consideration, Liability, Ending Balance 0   0  
BioMedical [Member] | Minimum [Member]        
Business Acquisition, Contingent Consideration, Potential Cash Payment 0   0  
BioMedical [Member] | Maximum [Member]        
Business Acquisition, Contingent Consideration, Potential Cash Payment 1,648   1,648  
Distribution & Storage [Member]        
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]        
Business Combination, Contingent Consideration, Liability, Beginning Balance     0  
Business Combination, Contingent Consideration Arrangements, Inception Amount Recorded During Reporting Period     1,800,000  
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration Recorded in Income, Liability 86,000 $ 0 86,000 [1],[2] $ 0
Payment of contingent consideration     0  
Business Combination, Contingent Consideration, Liability, Ending Balance $ 1,886,000   $ 1,886,000  
[1] For the three months ended September 30, 2014, the fair value of contingent consideration related to the BioMedical segment increased by $63. For the nine months ended September 30, 2015 and 2014, the fair value of contingent consideration related to the BioMedical segment decreased by $463 and increased by $187, respectively.
[2] For the three months ended September 30, 2015, the fair value of contingent consideration related to the Distribution & Storage segment increased by $86.