CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical)	12 Months Ended
	Sep. 30, 2021 $ / shares shares	Sep. 30, 2020 $ / shares shares	Sep. 30, 2019 $ / shares shares
CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY
Dividends per share | $ / shares	$ 0.36	$ 0.22	$ 0.21
Restricted stock grants - shares		4,308
Restricted stock forfeitures - shares	1,500		6,897
Stock option exercises, shares	6,840	85,083	200,631
Purchase of treasury shares, shares	5,424	14,106	32,904