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Discontinued Operations - Supplemental Cash flow for Discontinued Operations (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Discontinued Operations, Disposed of by Sale    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Cash used in operating activities—discontinued operations $ 0  
Cash provided by investing activities—discontinued operations $ 0  
Discontinued Operations, Held for Sale    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Cash used in operating activities—discontinued operations   $ (1,838)
Cash provided by investing activities—discontinued operations   $ 87,986