Quarterly report pursuant to Section 13 or 15(d)

Restructuring Charges (Details)

v3.21.2
Restructuring Charges (Details)
$ in Thousands
3 Months Ended 6 Months Ended 7 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
Jun. 30, 2020
USD ($)
Aug. 14, 2020
numberOfPositions
Sep. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
Dec. 31, 2020
USD ($)
Restructuring Cost and Reserve [Line Items]              
Factor by which the average annual base management fee is multiplied for purposes of determining the management agreement termination fee | numberOfPositions       3      
Period over which the average annual base management fee is calculated for purposes of determining the management agreement termination fee       24 months      
Restructuring charges $ 0 $ (139,788)     $ 0 $ 6,000 $ 5,700
Contract Termination [Member]              
Restructuring Cost and Reserve [Line Items]              
Restructuring charges     $ 139,800