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Organization STL Acquisition (Details) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
May 29, 2019
Dec. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Business Acquisition [Line Items]          
Cash paid for business acquisition     $ 4,081 $ 0 $ 0
STL          
Business Acquisition [Line Items]          
Controlling interest acquired, ownership percentage 70.00%        
Total consideration for business acquisition $ 5,100        
Cash paid for business acquisition $ 4,100        
Other payment for business acquisition   $ 1,000      
Redeemable noncontrolling interests, ownership percentage 30.00%        
Redeemable noncontrolling interests recognized $ 3,400        
Intangible assets recognized $ 2,400        
Goodwill recognized     $ 6,900