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Line of Credit - Additional Information (Details) - USD ($)
3 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Mar. 31, 2021
Mar. 12, 2021
Mar. 29, 2018
Line Of Credit Facility [Line Items]          
Loans outstanding $ 0   $ 0    
Remaining borrowing capacity 300,000,000   $ 300,000,000    
Interest expense 190,000 $ 928,000      
Amortization of debt issuance costs 127,000 $ 177,000      
Revolving Credit Facility          
Line Of Credit Facility [Line Items]          
Maximum borrowing capacity $ 150,000,000     $ 300,000,000 $ 300,000,000
Credit agreement maturity date Mar. 12, 2026        
Letter of Credit          
Line Of Credit Facility [Line Items]          
Maximum borrowing capacity       10,000,000  
Swing-Line Loans          
Line Of Credit Facility [Line Items]          
Maximum borrowing capacity       $ 10,000,000