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Long-Term Debt and Revolving Credit Facility - Narrative (Details) - USD ($)
12 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2020
Sep. 30, 2021
Jul. 31, 2021
Debt Instrument [Line Items]          
Maturities year one $ 33,000        
Maturities year two 36,000        
Maturities year three $ 68,010,000        
Weighted average interest rate on borrowings outstanding 3.35% 1.40%      
Interest paid on borrowings $ 1,378,000 $ 382,000 $ 15,000    
Adjusted leverage ratio, indebtedness reduction for excess cash $ 15,000,000        
Adjusted leverage ratio covenant 300.00%        
Revolving Credit Facility          
Debt Instrument [Line Items]          
Maximum borrowing capacity $ 125,000,000        
Maximum borrowing increase in capacity upon request 200,000,000        
Borrowing capacity on the credit facility $ 55,300,000        
Interest Rate Swap | Designated as Hedging Instrument          
Debt Instrument [Line Items]          
Derivative, notional amount       $ 40,000,000 $ 40,000,000
Minimum | Revolving Credit Facility          
Debt Instrument [Line Items]          
Unused capacity, commitment fee percentage (basis points) 0.20%        
Maximum          
Debt Instrument [Line Items]          
Adjusted leverage ratio, indebtedness reduction for excess cash $ 35,000,000        
Maximum | Revolving Credit Facility          
Debt Instrument [Line Items]          
Amount available for letters of credit $ 10,000,000        
Unused capacity, commitment fee percentage (basis points) 0.30%        
Financial Standby Letter of Credit          
Debt Instrument [Line Items]          
Letters of credit outstanding $ 1,700,000        
Eurocurrency Loans Margin | Minimum | Revolving Credit Facility          
Debt Instrument [Line Items]          
Interest rate (basis points) 1.25%        
Eurocurrency Loans Margin | Maximum | Revolving Credit Facility          
Debt Instrument [Line Items]          
Interest rate (basis points) 2.00%        
London Interbank Offered Rate (LIBOR) | Primary Credit Facility          
Debt Instrument [Line Items]          
Interest rate charged over index rate 1.00%        
Federal Funds Rate | Primary Credit Facility          
Debt Instrument [Line Items]          
Interest rate charged over index rate 0.50%        
Alternate Base Rate Loans Spread | Minimum | Revolving Credit Facility          
Debt Instrument [Line Items]          
Interest rate (basis points) 0.25%        
Alternate Base Rate Loans Spread | Maximum | Revolving Credit Facility          
Debt Instrument [Line Items]          
Interest rate (basis points) 1.00%