Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments - Fair Value of Interest Rate Swaps (Details)

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Derivative Instruments - Fair Value of Interest Rate Swaps (Details) - Interest rate swaps - USD ($)
Mar. 31, 2021
Dec. 31, 2020
Mar. 29, 2018
Derivatives, Fair Value [Line Items]      
Derivative Liabilities $ (8,674,000) $ (10,255,000)  
2018 Term Loan A      
Derivatives, Fair Value [Line Items]      
Aggregate Notional Amount 150,000,000.0   $ 150,000,000.0
2018 Term Loan A | Accounts payable and other liabilities      
Derivatives, Fair Value [Line Items]      
Derivative Liabilities (3,263,000) (4,009,000)  
2018 Term Loan B      
Derivatives, Fair Value [Line Items]      
Aggregate Notional Amount 100,000,000.0   $ 100,000,000.0
2018 Term Loan B | Accounts payable and other liabilities      
Derivatives, Fair Value [Line Items]      
Derivative Liabilities $ (5,411,000) $ (6,246,000)