Nature of Operations and Summary of Significant Accounting Policies - Additional Information (Detail)	3 Months Ended	12 Months Ended
Dec. 31, 2015 USD ($) Patents Institution	Dec. 31, 2014 USD ($)	Sep. 30, 2015 USD ($)
Accounting Policies [Abstract]
Number of patents granted \| Patents	23
Number of patent applications pending \| Patents	19
Number of financial institutions signed agreements to deploy mobile deposit \| Institution	4,789
Number of top U.S. retail banks that deployed mobile deposit \| Institution	50
Foreign currency translation adjustment	$ 129,834	$ 0
Impairment of goodwill and intangibles	0		$ 0
Other-than-temporary impairment charges recognized	0	0
Allowance for doubtful accounts receivable	12,300		12,900
Software development costs capitalized	0	$ 0
Accumulated other comprehensive loss	$ 153,362		$ 3,241

Number of financial institutions that signed agreement to deploy mobile deposit.

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Number of patents granted.

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Number of pending patent applications.

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Number of top retail banks that deployed mobile deposit.

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
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A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

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-Publisher FASB
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Unamortized costs incurred for development of computer software, which is to be sold, leased or otherwise marketed, after establishing technological feasibility through to the general release of the software products. Excludes capitalized costs of developing software for internal use.

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Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill.

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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