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Business Combinations Business Combinations Textuals (Details) - USD ($)
3 Months Ended
Mar. 31, 2021
Dec. 31, 2020
Oct. 05, 2020
Aug. 21, 2019
Gibson Engineering [Domain]        
Business Acquisition, Percentage of Voting Interests Acquired   100.00%    
Total Consideration $ 15,450,000      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net   $ 1,099,000    
Intangible Assets, Net (Including Goodwill)   $ 14,351,000    
Funding from Holdback Payments 1,938,000      
Debt Instrument, Interest Rate, Stated Percentage   1.00%    
Advanced Control Solutions [Member]        
Total Consideration 17,888,000      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net     $ 1,231,000  
Intangible Assets, Net (Including Goodwill)     $ 16,657,000  
Olympus Controls [Member]        
Business Acquisition, Percentage of Voting Interests Acquired       100.00%
Total Consideration $ 36,642,000      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net       $ 9,540,000
Intangible Assets, Net (Including Goodwill)       $ 27,102,000