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COMMITMENTS AND CONTINGENCIES - ADDITIONAL INFORMATION (Detail) € in Thousands, £ in Thousands, $ in Thousands				12 Months Ended
	Jul. 20, 2016 patent	Sep. 08, 2014 complaint	May 16, 2014 patent	Sep. 30, 2017 USD ($) ft²	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2017 GBP (£) ft²	Sep. 30, 2017 EUR (€) ft²
Loss Contingencies [Line Items]
Company contribution, percent of designated deferral of eligible compensation				25.00%
Company contribution, percent of employee compensation eligible for company match				6.00%
Employer contribution amount				$ 121	$ 91	$ 42
Commencement date of term of lease				Oct. 01, 2016
Expiration date of term of lease				Apr. 30, 2020
Annual base rent				$ 600
Tenant improvement allowances				$ 300
Previous facility lease termination date				Oct. 16, 2016
Unamortized lease incentives				$ 49
Rent expense for the Company's operating leases				$ 600	$ 300	$ 400
IDchecker
Loss Contingencies [Line Items]
Expiration date of term of lease				May 31, 2020
Annual base rent | €								€ 48
Building
Loss Contingencies [Line Items]
Amended office space subject to the lease (in square feet) | ft²				28,791			28,791	28,791
Sales office
Loss Contingencies [Line Items]
Expiration date of term of lease				May 31, 2018
Annual base rent | £							£ 77
Rothschild Mobile Imaging Innovations, Inc. Patent Infringement
Loss Contingencies [Line Items]
Number of patents infringed upon | patent			4
Number of new claims filed | complaint		3
Number of patents found not infringed upon | patent	4

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Unamortized lease incentives.

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Amount of cost for defined contribution plan.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 715
-SubTopic 70
-Section 50
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Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

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Carrying amount as of the balance sheet date of improvements having a life longer than one year that were made for the benefit of one or more tenants.

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