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STOCKHOLDERS' EQUITY (Details) - USD ($)
$ in Millions
 3 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Nov. 20, 2019
Equity, Class of Treasury Stock [Line Items]      
Stock repurchased during the period (in shares) 79,101 82,971  
Stock repurchased during the period, value $ 1.8 $ 2.7  
    Common Stock      
Equity, Class of Treasury Stock [Line Items]      
Shares authorized to be repurchased (in shares)     7,500,000
Stock repurchased under repurchase program (in shares) 1,943,575 899,371  
Remaining number of shares authorized to be repurchased (in shares) 2,285,157