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BUSINESS COMBINATIONS - INTANGIBLE ASSETS ACQUIRED (Details) - USD ($) $ in Thousands			12 Months Ended
	May 23, 2018	Oct. 16, 2017	Sep. 30, 2018	Sep. 30, 2017
Customer relationships
Acquired Indefinite-lived Intangible Assets [Line Items]
Amortization Period			4 years 9 months 18 days	6 years
A2iA
Acquired Indefinite-lived Intangible Assets [Line Items]
Amount assigned	$ 28,610
A2iA | Completed technologies
Acquired Indefinite-lived Intangible Assets [Line Items]
Amortization Period	7 years
Amount assigned	$ 13,015
A2iA | Customer relationships
Acquired Indefinite-lived Intangible Assets [Line Items]
Amortization Period	5 years
Amount assigned	$ 15,360
A2iA | Trade names
Acquired Indefinite-lived Intangible Assets [Line Items]
Amortization Period	5 years
Amount assigned	$ 235
ICAR
Acquired Indefinite-lived Intangible Assets [Line Items]
Amount assigned		$ 6,407
ICAR | Completed technologies
Acquired Indefinite-lived Intangible Assets [Line Items]
Amortization Period		5 years
Amount assigned		$ 4,956
ICAR | Customer relationships
Acquired Indefinite-lived Intangible Assets [Line Items]
Amortization Period		2 years
Amount assigned		$ 1,298
ICAR | Trade names
Acquired Indefinite-lived Intangible Assets [Line Items]
Amortization Period		3 years
Amount assigned		$ 153

X

- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
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- Definition

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+ References

No definition available.

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- Definition

Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)(1)
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