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STOCK COMPENSATION - Summary of Stock Options (Details) - USD ($)
 12 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2019
Number of Shares      
Options outstanding, beginning of period (in shares) 0 59,835  
Granted (in shares) 0 0 0
Exercised (in shares)   (59,835)  
Forfeited or expired (in shares)   0  
Options outstanding, end of period (in shares)   0 59,835
Options exercisable end of year (in shares) 0 0  
Weighted Average Exercise Price      
Options outstanding, beginning of period (in dollars per share) $ 0 $ 8.06  
Granted (in dollars per share)   0  
Exercised (in dollars per share)   8.06  
Forfeited or expired (in dollars per share)   0  
Options outstanding, end of period (in dollars per share)   0 $ 8.06
Options exercisable end of year (in dollars per share)   $ 0  
Weighted Average Remaining Contractual Term (Yrs)      
Options outstanding , weighted average remaining contractual term (in years)     1 year 6 months 14 days
Options exercised, weighted average remaining contractual term (in years)   1 year  
Aggregate Intrinsic Value      
Options outstanding, beginning of period $ 0 $ 1,469,000  
Granted   0  
Exercised $ 0 1,011,000 $ 1,800,000
Forfeited or expired   0  
Options outstanding, end of period   0 $ 1,469,000
Options exerisable, end of period   $ 0