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Derivative Instruments - Summary of Fair Values of Derivatives (Details) - Interest rate swaps - Designated as Hedging Instrument - USD ($)
Dec. 31, 2020
Mar. 31, 2020
Derivatives, Fair Value [Line Items]    
Derivative, notional amount $ 400,000,000.0  
Cash flow    
Derivatives, Fair Value [Line Items]    
Derivative, notional amount 200,000,000 $ 200,000,000
Other Accrued Liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liability, fair value (224,000) (1,905,000)
Other Long-Term Liabilities    
Derivatives, Fair Value [Line Items]    
Derivative liability, fair value $ (3,045,000) $ (4,412,000)