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Revolving Credit Facility (Details)
3 Months Ended
Aug. 31, 2018
USD ($)
covenant
Mar. 31, 2022
USD ($)
Mar. 31, 2021
USD ($)
Debt Instrument [Line Items]      
Line of credit, maximum borrowing capacity $ 175,000,000    
Commitment fee percentage 0.15%    
Commitment fee percentage on unused capacity 0.30%    
Number of financial covenants | covenant 2    
Ratio of indebtedness to net capital 3.50    
Consolidated fixed charge coverage ratio 1.25    
Interest expense, debt     $ 200,000
Fed Funds Effective Rate Overnight Index Swap Rate      
Debt Instrument [Line Items]      
Basis spread on variable rate   0.50%  
London Interbank Offered Rate (LIBOR)      
Debt Instrument [Line Items]      
Basis spread on variable rate   1.00%  
Minimum | London Interbank Offered Rate (LIBOR)      
Debt Instrument [Line Items]      
Stated interest rate 1.75%    
Minimum | Base Rate      
Debt Instrument [Line Items]      
Stated interest rate 0.75%    
Maximum      
Debt Instrument [Line Items]      
Ratio of indebtedness to net capital 4.50    
Maximum | London Interbank Offered Rate (LIBOR)      
Debt Instrument [Line Items]      
Stated interest rate 2.50%    
Maximum | Base Rate      
Debt Instrument [Line Items]      
Stated interest rate 1.50%    
Revolving Credit Facility      
Debt Instrument [Line Items]      
Interest expense, debt   $ 200,000