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Fair Value Measurements (Narratives) (Details) - USD ($)
12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2018
Interest rate swap contracts        
Assets/Liabilities        
Notional principal amount $ 200,000,000.0      
Other Comprehensive Income (Loss) | Interest rate swap contracts        
Assets/Liabilities        
Unrealized loss on interest rate cash flow hedges (1,100,000) $ (1,800,000)    
Not Designated as Hedging Instrument | Foreign Exchange Contract        
Assets/Liabilities        
Notional principal amount $ 23,000,000.0 $ 4,000,000.0    
Maximum maturities for contracts 40 days 40 days    
Gain (loss) on foreign currency derivative instruments $ 500,000 $ 100,000 $ 0  
Designated as Hedging Instrument | Foreign Exchange Contract        
Assets/Liabilities        
Notional principal amount $ 21,800,000      
Maximum maturities for contracts 12 months      
Unrealized gain (loss) on derivatives $ 200,000 0 0  
Level 2 Assets and Liabilities        
Assets/Liabilities        
Long-term debt, fair value 346,700,000 420,800,000    
Transfers of assets between Level 1 and Level 2 0 0    
Transfers of liabilities between Level 1 and Level 2 0 0    
Level 3 Assets and Liabilities        
Assets/Liabilities        
Acquisition-related contingent consideration obligations 913,000 2,167,000 $ 6,298,000 $ 12,749,000
Transfers of assets between Level 2 and Level 3 0 0    
Transfers of liabilities between Level 2 and Level 3 $ 0 $ 0