STOCKHOLDERS' EQUITY (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Nov. 20, 2019
Class of Stock [Line Items]
Stock repurchased during the period (in shares)	82,971	64,628
Stock repurchased during the period, value	$ 2.7	$ 2.4
Treasury Stock
Class of Stock [Line Items]
Stock repurchased and retired during period (in shares)	899,371
Average cost per share (in dollars per share)	$ 34.17
Remaining number of shares authorized to be repurchased	319,228
Common Stock
Class of Stock [Line Items]
Common stock, shares authorized (in shares)			7,500,000