GOODWILL AND OTHER INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Oct. 22, 2015	Sep. 30, 2015
GOODWILL AND OTHER INTANGIBLE ASSETS [Abstract]
Goodwill		$ 95,711		$ 95,711			$ 40,442
Goodwill recorded in connection with acquisition				54,482
Foreign exchange fluctuation				787
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount subject to amortization		79,554		79,554			30,265
Accumulated amortization		33,161		33,161			26,890
Indefinite-lived Intangible Assets by Major Class [Line Items]
Total other intangible assets not subject to amortization		13,190		13,190			1,190
Total other intangible assets, gross carrying amount		92,744		92,744			31,455
Intangible assets						$ 61,000
Other intangible assets [Abstract]
Amortization expense		2,072	$ 590	6,026	$ 1,765
Estimated future amortization expense [Abstract]
Remainder of 2016		1,938		1,938
2017		7,529		7,529
2018		6,870		6,870
2019		6,453		6,453
2020		6,448		6,448
In-process Technology [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Other indefinite-lived intangible assets		12,000		12,000			0
Other Indefinite-lived Intangibles [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Other indefinite-lived intangible assets	[1]	1,190		1,190			1,190
Product Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount subject to amortization		41,117		41,117			8,053
Accumulated amortization		11,286		11,286			7,490
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		8,078		8,078			7,845
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		27,617		27,617			11,392
Accumulated amortization		$ 11,247		$ 11,247			$ 9,005

[1] Other indefinite-lived intangible assets not subject to amortization consist primarily of trade names.