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Business Combination - Schedule of Estimated Fair Values of Assets acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands | Mar. 31, 2016 | Sep. 30, 2015 | Jun. 17, 2015
--- | --- | --- | ---
Business Acquisition [Line Items] |  |  |
Goodwill | $ 2,806 | $ 2,873 |
ID Checker [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Current assets |  |  | $ 620
Property, plant and equipment |  |  | 42
Intangible assets |  |  | 3,570
Assets acquired |  |  | 4,232
Current liabilities |  |  | (476)
Other liabilities |  |  | (810)
Liabilities assumed |  |  | (1,286)
Fair value of net assets acquired |  |  | 2,946
Total consideration paid |  |  | 5,819
Goodwill before effect in exchange rates |  |  | 2,873
Effect of movements in exchange rates |  |  | (67)
Goodwill |  |  | $ 2,806

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