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Self Administration Transaction - Narrative (Details)
$ / shares in Units, $ in Thousands, shares in Millions
Dec. 14, 2018
USD ($)
contingency
$ / shares
shares
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Business Acquisition [Line Items]      
Goodwill   $ 229,948 $ 229,948
GRECO      
Business Acquisition [Line Items]      
Membership interest acquired (percent) 100.00%    
Limited partnership units issued (shares) | shares 20.4    
Share price (in usd per share) | $ / shares $ 10.03    
Number of earn-out contingencies | contingency 2    
Estimated fair value of earn-out obligation $ 29,380    
Goodwill $ 229,948