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Discontinued Operation - Narrative (Details) - USD ($)
 3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Severance and disposal costs $ 1,600,000  
Operating expenses 22,964,000 $ 19,725,000
Increase in cash from changes in operating assets and liabilities 3,207,000 1,805,000
Disposal Group, Not Discontinued Operations    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Cost of revenue 64,000 34,000
Operating expenses 7,000 3,000
Discontinued Operations, Disposed of by Sale    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Net cash used in operating activities (1,026,000) (1,576,000)
Gain (loss) from disposal of discontinued operation 3,500,000 1,800,000
Non-cash items 236,000 24,000
Provision of loss on accounts receivable 150,000 29,000
Increase in cash from changes in operating assets and liabilities $ 2,200,000 $ 226,000