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Business Combination - Additional Information (Detail) - USD ($) |  | 12 Months Ended |
--- | --- | --- | ---
Jun. 17, 2015 | Sep. 30, 2016 | Sep. 30, 2015
Business Acquisition [Line Items] |  |  |
Common stock, par value |  | $ 0.001 | $ 0.001
Goodwill |  | $ 2,863,000 | $ 2,873,000
Maximum [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Business combination, escrow fund period | 24 months |  |
IDchecker [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Acquisition date | Jun. 17, 2015 |  |
Total consideration paid | $ 5,900,000 |  |
Payments to acquire businesses, gross | 5,600,000 |  |
Common stock issued during acquisition, value | $ 2,700,000 |  |
Common stock, par value | $ 0.001 |  |
Business combination consideration transfer, promissory notes | $ 300,000 |  |
Cash payment to escrow fund related to business acquisition | $ 1,800,000 |  |
Business combination, percentage of closing shares in escrow fund | 20.00% |  |
Goodwill | $ 2,863,000 |  |
IDchecker [Member] | Closing Shares [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Common stock issued during acquisition, share | 712,790 |  |
IDchecker [Member] | Maximum [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Business combination, earnout shares | $ 2,000,000 | $ 2,000,000 |

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