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Debt Obligations (Details) - USD ($)
3 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Jun. 30, 2020
Mar. 27, 2019
Line of Credit Facility        
Long-term Line of Credit, Noncurrent $ 69,800,000   $ 122,000,000  
Line of credit, commitment fee percent 0.50%      
Minimum | Prime Rate [Member]        
Line of Credit Facility        
Debt Instrument, Basis Spread on Variable Rate 3.50%      
Minimum | London Interbank Offered Rate (LIBOR) [Member]        
Line of Credit Facility        
Debt Instrument, Basis Spread on Variable Rate 4.50%      
Maximum | Prime Rate [Member]        
Line of Credit Facility        
Debt Instrument, Basis Spread on Variable Rate 4.50%      
Maximum | London Interbank Offered Rate (LIBOR) [Member]        
Line of Credit Facility        
Debt Instrument, Basis Spread on Variable Rate 5.50%      
Revolving Credit Facility        
Line of Credit Facility        
Long-term Line of Credit, Noncurrent $ 69,800,000   $ 122,000,000  
Debt, Weighted Average Interest Rate 5.93%   4.91%  
Amended Credit Agreement | Revolving Credit Facility        
Line of Credit Facility        
Line of credit, maximum borrowing capacity $ 125,000,000.0      
Line Of Credit Facility Quarterly Commitment Reduction 5,000,000.0      
Amount outstanding 4,300,000      
Amended Credit Agreement Third Amendment        
Line of Credit Facility        
Debt Instrument Covenant Capital Expenditure Maximum 25,000,000.0      
JP Morgan Chase | JPM Chase Loan Agreement | Swing Line Loans        
Line of Credit Facility        
Line of credit, maximum borrowing capacity 15,000,000.0      
Interest Rate Swap        
Line of Credit Facility        
Derivative, Notional Amount 65,000,000.0     $ 80,000,000.0
Interest Rate Swap | Interest Expense        
Line of Credit Facility        
Other Comprehensive Income (Loss), Cash Flow Hedge, Reclassification for Discontinuance, before Tax $ 339,000 $ 0