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Derivative Instruments - Additional Information (Details) - USD ($)
1 Months Ended 12 Months Ended
Feb. 21, 2020
Oct. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Sep. 30, 2020
Feb. 29, 2020
Interest Rate Swap Agreement            
Derivative Instruments Gain Loss [Line Items]            
Notional amount   $ 140,000,000.0     $ 65,000,000.0 $ 30,000,000.0
Variable-rate term loan   $ 140,000,000.0 $ 205,000,000.0      
Term of agreement   5 years        
Pre-tax gain (loss) reclassified from accumulated other comprehensive income (loss) into interest expense     $ 1,400,000 $ (100,000)    
Interest Rate Swap at 1.331% | Regions Bank            
Derivative Instruments Gain Loss [Line Items]            
Notional amount $ 30,000,000.0       65,000,000.0  
Swap transaction inception date Mar. 31, 2020          
Swap transaction termination date Feb. 10, 2025          
Interest Rate Swap at 1.331% | Regions Bank | LIBOR            
Derivative Instruments Gain Loss [Line Items]            
Notional amount $ 30,000,000.0       $ 65,000,000.0