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Goodwill and Intangible Assets - Narrative (Details)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2020
USD ($)
Jun. 30, 2019
USD ($)
Jun. 30, 2020
USD ($)
Asset
Jun. 30, 2019
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2017
USD ($)
Business Acquisition [Line Items]            
Amortization expense $ 517,000 $ 658,000 $ 1,033,000 $ 1,318,000 $ 2,640,000  
Net intangible assets, end of year $ 4,222,000   $ 4,222,000   $ 5,255,000  
Number of infinite-lived intangible assets | Asset     1      
Customer Relationships            
Business Acquisition [Line Items]            
Finite-lived intangibles acquired           $ 18,800,000
Acquired finite-lived intangible assets, useful life     8 years      
Trade Names            
Business Acquisition [Line Items]            
Goodwill impairment charges     $ 0