CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Statement of Stockholders' Equity [Abstract]
Purchase of treasury stock, shares (in shares)	95,229	120,156
Issuance of treasury stock, shares (in shares)	205,623	213,370
Dividends, per share (in dollars per share)	$ 0.17	$ 0.15