Annual report pursuant to Section 13 and 15(d)

Discontinued Operations - Narrative (Details)

v3.20.4
Discontinued Operations - Narrative (Details) - USD ($)
3 Months Ended 12 Months Ended
Sep. 30, 2019
Jun. 30, 2019
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Proceeds from sale of discontinued operations         $ 90,200,000
Capital expenditure $ 1,900,000        
Sublease Income     $ 100,000 $ 1,400,000  
Reversal of previously recognized liability   $ 11,400,000      
TZI          
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Termination fee to cancel sublease before end of term       2,500,000  
TZI | Transition Service Agreement          
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Other Income     $ 500,000 11,900,000  
TZI | Administrative fees          
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Other Income       $ 3,000,000.0