Annual report pursuant to Section 13 and 15(d)

Derivatives - Narrative (Details)

v3.20.4
Derivatives - Narrative (Details)
4 Months Ended 8 Months Ended 12 Months Ended
Apr. 30, 2019
USD ($)
Dec. 31, 2019
USD ($)
Aug. 31, 2019
USD ($)
Dec. 31, 2020
USD ($)
interest_rate_swap
Dec. 31, 2018
USD ($)
Nov. 30, 2019
USD ($)
Derivative Instruments, Gain (Loss) [Line Items]            
Unrealized loss on derivatives   $ 0 $ 4,577,000 $ 0 $ 3,151,000  
Takeback Loan Facility Due March 2024 | Takeback Loan Facility            
Derivative Instruments, Gain (Loss) [Line Items]            
Debt instrument, face amount     $ 822,500,000     $ 750,000,000
Interest Rate Swap            
Derivative Instruments, Gain (Loss) [Line Items]            
Termination amount $ 8,767,000          
Realized loss on derivatives 2,227,000          
Derivatives outstanding | interest_rate_swap       0    
Interest Rate Swap | Counterparty            
Derivative Instruments, Gain (Loss) [Line Items]            
Termination amount $ 6,540,000          
Cash flow hedge | Interest Rate Cap            
Derivative Instruments, Gain (Loss) [Line Items]            
Derivative asset       $ 117,000   $ 3,020,000
Interest expense to be reclassified from Accumulated other comprehensive income (loss) to interest expense, in the next twelve months       $ 737,000