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v3.21.2

Nature of Operations and Summary of Significant Accounting Policies - Narrative (Details) $ / shares in Units, check_deposit in Billions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 USD ($) patent institution check_deposit $ / shares | Sep. 30, 2020 USD ($) $ / shares | Jun. 30, 2020 USD ($) | Jun. 30, 2021 USD ($) segment patent institution check_deposit $ / shares | Jun. 30, 2020 USD ($) | Feb. 05, 2021 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Number of financial institutions signed agreements to deploy mobile deposit (more than) | institution | 7,500 |  |  |  | 7,500 |  |  |
Number of check deposits processed (over five billion) | check_deposit | 5 |  |  |  | 5 |  |  |
Number of patents granted | patent | 73 |  |  |  | 73 |  |  |
Number of pending patent applications | patent | 15 |  |  |  | 15 |  |  |
Net gains resulting from foreign exchange translation | $ 747,000 |  | $ 1,135,000 |  | $ 859,000 | $ 1,324,000 |  |
Product management costs | 6,946,000 |  | 5,891,000 | [1] | 19,801,000 | 16,764,000 | [1] |
Other than temporary impairment charges recognized on investments | $ 0 |  | 0 |  | $ 0 | 0 |  |
Common stock, par value (in dollars per share) | $ / shares | $ 0.001 | $ 0.001 |  |  | $ 0.001 |  |  |
Write-offs of allowance for doubtful accounts | $ 35,000 |  |  |  | $ 100,000 |  |  |
Allowance for doubtful accounts receivable | 300,000 | $ 200,000 |  |  | 300,000 |  |  |
Capitalized software development costs | 0 |  | 0 |  | 0 | 0 |  |
Amortization expense of capitalized software development costs | 0 |  | 0 |  | 0 | 0 |  |
Capitalized software development costs for internal use |  |  |  |  | 600,000 | 100,000 |  |
Amortization expense from capitalized software development costs for internal use |  |  |  |  | $ 300,000 | 300,000 |  |
Number of operating segments | segment |  |  |  |  | 1 |  |  |
Number of reporting units | segment |  |  |  |  | 1 |  |  |
Goodwill impairment |  | 0 |  |  |  |  |  |
Impairment charges related to intangible assets | 0 |  | 0 |  | $ 0 | 0 |  |
Trading-day average stock price period |  |  |  |  | 20 days |  |  |
Accumulated other comprehensive income (loss) | $ 361,000 | (323,000) |  |  | $ 361,000 |  |  |
Convertible Debt | 2026 Notes |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Debt issued |  |  |  |  |  |  |  | $ 155,300,000
Debt interest rate |  |  |  |  |  |  |  | 0.75%
Revision of Prior Period, Reclassification, Adjustment |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Product management costs |  |  | $ 800,000 |  |  | $ 2,200,000 |  |
ICAR | Spanish Government Agencies |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Debt interest rate | 0.00% |  |  |  | 0.00% |  |  |
Amount outstanding under loan agreement | $ 900,000 | 700,000 |  |  | $ 900,000 |  |  |
ICAR | Spanish Government Agencies | Other current liabilities |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Amount outstanding under loan agreement | 100,000 | 100,000 |  |  | 100,000 |  |  |
ICAR | Spanish Government Agencies | Other non-current liabilities |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Amount outstanding under loan agreement | $ 800,000 | $ 600,000 |  |  | $ 800,000 |  |  |
Minimum | ICAR | Spanish Government Agencies |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Term of loan agreement |  |  |  |  | 5 years |  |  |
Maximum | ICAR | Spanish Government Agencies |  |  |  |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |  |  |  |
Term of loan agreement |  |  |  |  | 12 years |  |  |
[1] | June 30, 2020 consolidated statements of operations reflect reclassifications to conform to the current year presentation.

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