CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (Parentheticals) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Statement of Comprehensive Income [Abstract]
Tax on unrealized (loss) gain on available for sale securities	$ 3,754	$ 394	$ (2,014)	$ 319
Tax on net unrealized (loss) gain on derivatives	2	(6)	0	(56)
Tax on adjustment for postemployment benefit obligation	$ (174)	$ (169)	$ (523)	$ (506)