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Discontinued Operations - Significant Non-cash Supplemental Cash Flow Items of Discontinued Operations (Details) - Commercial Product Portfolio - Sale - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Depreciation and amortization $ 0 $ 1,263
Stock-based compensation 0 3,404
Change in fair value of contingent consideration $ 0 $ 1,478