SHARE-BASED COMPENSATION PLANS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012
Omnibus Incentive Plan [Abstract]
Share based compensation expense			$ 7,303	$ 7,419
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock based compensation expense	3,809	4,026	7,303	7,419
Stock based compensation - tax benefit	1,345	1,300	2,531	2,356
Total share-based compensation expense, net of tax	2,464	2,726	4,772	5,063
Number of non-employee directors who have completed two full terms of service	5		5
Fair value of awards for completing minimum full terms of service	755
Cost of Goods Sold [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock based compensation expense	403	366	915	747
Research, Development and technical [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock based compensation expense	310	255	676	545
Selling and Marketing [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock based compensation expense	324	292	710	769
General and Administrative [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock based compensation expense	$ 2,772	$ 3,113	$ 5,002	$ 5,358