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Basis of Presentation - Acquisition of 5 Arches (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended
Mar. 01, 2019
May 01, 2018
May 31, 2018
Mar. 31, 2019
Dec. 31, 2018
5 Arches, LLC          
Business Acquisition [Line Items]          
Percent acquired       80.00%  
Contingent consideration performance term     2 years    
Minority interest, percentage     20.00%    
Remeasurement gain       $ 2,000  
Intangibles $ 24,800        
Goodwill 28,728     $ 28,728 $ 0
Goodwill deductible for tax purposes 3,000        
Payment of cash to acquire business 13,000        
Contingent consideration maximum amount $ 27,000        
5 Arches, LLC          
Business Acquisition [Line Items]          
Option to purchase additional equity, term   1 year 1 year    
Payments to acquire equity method investment   $ 10,000 $ 10,000