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Limited Liability Company Subsidiaries (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Jun. 30, 2017
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Limited Liability Company Subsidiaries (Textual)        
Proceeds of key man life insurance   $ 6,000
Noncontrolling interests share of net income   1,220 1,222 1,799
Minority interest   $ 29,591 $ 602  
Operating Agreement [Member]        
Limited Liability Company Subsidiaries (Textual)        
Fair value adjustments       1,150
Proceeds of key man life insurance       6,000
Minority interest $ 7,850      
Operating Agreement [Member] | Mandatorily redeemable noncontrolling interests issued after November 5, 2003 [Member]        
Limited Liability Company Subsidiaries (Textual)        
Fair value adjustments $ 7,850     $ 9,000