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RETIREMENT PLAN (Details) - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2017
Retirement Benefits [Abstract]      
Service period 6 months    
Maximum percent of voluntary contribution 100.00%    
Percentage of safe harbor matching contributions for first 3% employee compensation 100.00% 100.00% 100.00%
Percentage of employee compensation eligible for 100% safe harbor matching contributions 3.00% 3.00% 3.00%
Percentage of safe harbor matching contributions for next 2% employee compensation 50.00% 50.00% 50.00%
Percentage of employee compensation eligible for 50% of next safe harbor matching contributions 2.00% 2.00% 2.00%
Company's safe harbor contribution $ 0.4 $ 0.3 $ 0.2