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Discontinued Operations - Cash Flows (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Cash provided by discontinued operating activities $ 7,647 $ 4,711
Cash used in discontinued investing activities (44) (44)
Cash used in discontinued financing activities (574) (975)
Sale | MSLO    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Cash provided by discontinued operating activities 7,647 4,711
Cash used in discontinued investing activities (44) (44)
Cash used in discontinued financing activities $ (574) $ (975)