GOODWILL AND OTHER INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Sep. 30, 2014
Goodwill [Roll Forward]
Beginning Balance				$ 43,245
Ending Balance		$ 42,688		42,688
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount subject to amortization		31,087		31,087		$ 31,291
Accumulated Amortization		26,951		26,951		25,318
Other intangible assets [Abstract]
Amortization expense		590	$ 601	1,765	$ 1,870
Indefinite-lived Intangible Assets by Major Class [Line Items]
Gross Carrying Amount not subject to amortization	[1]	1,190		1,190		1,190
Estimated future amortization expense [Abstract]
Remainder of 2015		590		590
2016		1,953		1,953
2017		1,130		1,130
2018		445		445
2019		11		11
Total other intangible assets, gross carrying amount		32,277		32,277		32,481
Product Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount subject to amortization		8,233		8,233		8,278
Accumulated Amortization		7,423		7,423		6,750
Acquired Patents and Licenses [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount subject to amortization		8,270		8,270		8,270
Accumulated Amortization		7,767		7,767		7,534
Trade Secrets and Know-how [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount subject to amortization		2,550		2,550		2,550
Accumulated Amortization		2,550		2,550		2,550
Customer Relationships, Distribution Rights and Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount subject to amortization		12,034		12,034		12,193
Accumulated Amortization		$ 9,211		$ 9,211		$ 8,484

[1] Total other intangible assets not subject to amortization consist primarily of trade names.