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Long-Term Debt (Details)
12 Months Ended
Apr. 01, 2021
Feb. 01, 2019
USD ($)
May 04, 2018
USD ($)
Jun. 30, 2021
USD ($)
Jun. 30, 2020
USD ($)
Jun. 30, 2019
USD ($)
Mar. 30, 2016
USD ($)
Line of Credit Facility [Line Items]              
Principal payment       $ 0 $ 1,500,000 $ 4,000,000  
Revolving Credit Facility | Line of Credit              
Line of Credit Facility [Line Items]              
Total liabilities to tangible net worth ratio (not greater than)       2.00      
Floor interest rate 4.00%            
Debt instrument, effective interest rate       4.00%      
Revolving Credit Facility | US Treasury (UST) Interest Rate | Line of Credit              
Line of Credit Facility [Line Items]              
Basis spread on variable rate 3.00%            
March 2016 Term Loan | Secured Debt              
Line of Credit Facility [Line Items]              
Maximum borrowing capacity             $ 10,000,000.0
Periodic principal payment       $ 500,000      
Fixed interest rate     5.68%       4.93%
Fixed charge coverage ratio, minimum   1.10 1.25       1.50
Trailing period   12 months 12 months        
Minimum working capital   $ 6,000,000.0 $ 8,000,000.0       $ 5,000,000.0
Total liabilities to tangible net worth ratio (not greater than)     3.00        
March 2016 Revolving Loan | Secured Debt              
Line of Credit Facility [Line Items]              
Principal payment   2,000,000.0          
March 2016 Revolving Loan | Revolving Credit Facility              
Line of Credit Facility [Line Items]              
Maximum borrowing capacity   $ 5,000,000.0         $ 2,000,000.0