CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Statement of Stockholders' Equity [Abstract]
Purchase of treasury stock (in shares)	186,417	75,765
Issuance of treasury stock (in shares)	2,822	223,971
Cancellations of treasury stock (in shares)	19,433	5,214
Dividends, per share (in dollars per share)	$ 0.20	$ 0.19