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Acquisitions and Dispositions (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Jul. 01, 2020
Mar. 19, 2020
Feb. 14, 2020
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Business Acquisition [Line Items]            
Aggregate purchase price for noncontrolling interest       $ 5,486 $ 4,608  
Deferred acquisition consideration       93,400   $ 83,065
Redeemable noncontrolling interest, redemptions, value       0   $ 12,289
Veritas [Member]            
Business Acquisition [Line Items]            
Remaining ownership interest acquired 10.00%          
Aggregate purchase price for noncontrolling interest $ 2,187          
Deferred cash payment for noncontrolling interest 1,087          
Reduction of noncontrolling and redeemable noncontrolling interest 2,651          
Difference between purchase price and noncontrolling interest recorded in common stock and other paid-in capital $ 464          
KWT Global [Member]            
Business Acquisition [Line Items]            
Remaining ownership interest acquired (percent)   22.50%        
Aggregate purchase price   $ 2,118        
Closing cash payment   729        
Deferred acquisition consideration   1,389        
Redeemable noncontrolling interest, redemptions, value       $ (1,615)    
Reduction in noncontrolling interests   $ 503        
Sloane and Company LLC [Member]            
Business Acquisition [Line Items]            
Proceeds from Divestiture of Businesses     $ 26,696      
Gain (loss) on disposition of business     $ 16,827      
Sloane and Company LLC [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]            
Business Acquisition [Line Items]            
Period of contingent payments expected after disposal     2 years