OTHER COMPREHENSIVE INCOME (LOSS) (Details) - Summary of Amounts Reclassified from Accumulated Other Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Pension amortization	$ 545	$ 493	$ 1,090	$ 986
Cash flow hedges	(110)	0	(197)	0
Available-for-sale securities	(489)	0	(489)	0
Total	(54)	493	404	986
Tax	(20)	168	146	345
Amounts reclassified from accumulated other comprehensive income (loss)	$ (34)	$ 325	$ 258	$ 641