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 ($)
Sep. 30, 2021
Sep. 27, 2021
Jun. 30, 2021
Dec. 31, 2020
Mar. 29, 2018
Jul. 22, 2016
Derivatives, Fair Value [Line Items]            
Aggregate Notional Amount           $ 100,000,000
Derivative Liabilities $ (1,689,000)     $ (10,255,000)    
2018 Term Loan A            
Derivatives, Fair Value [Line Items]            
Aggregate Notional Amount 100,000,000 $ 150,000,000 $ 150,000,000   $ 150,000,000  
2018 Term Loan A | Accounts payable and other liabilities            
Derivatives, Fair Value [Line Items]            
Derivative Liabilities (1,689,000)     (2,671,000)    
2018 Term Loan B            
Derivatives, Fair Value [Line Items]            
Aggregate Notional Amount 50,000,000 $ 100,000,000     $ 100,000,000  
2018 Term Loan B | Accounts payable and other liabilities            
Derivatives, Fair Value [Line Items]            
Derivative Liabilities 0     (1,338,000)    
2018 Term Loan C            
Derivatives, Fair Value [Line Items]            
Aggregate Notional Amount 100,000,000          
2018 Term Loan C | Accounts payable and other liabilities            
Derivatives, Fair Value [Line Items]            
Derivative Liabilities $ 0     $ (6,246,000)