OTHER COMPREHENSIVE INCOME (LOSS) (Details) - Summary of Amounts Reclassified from Accumulated Other Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Pension amortization	$ (545)	$ (491)	$ (1,635)	$ (2,682)
Cash flow hedges	100	0	520	0
Available-for-sale securities	0	0	1,370	0
Total gain (loss)	(445)	(491)	255	(2,682)
Tax benefit (expense)	(162)	(174)	80	(950)
Amounts reclassified from accumulated other comprehensive income (loss)	$ (283)	$ (317)	$ 175	$ (1,732)