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Summary of Significant Accounting Policies - Additional Information (Details) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020
Description of Business and Summary of Significant Accounting Policies [Line Items] |  |  |  |  |
Foreign Currency Transaction Gain (Loss), before Tax | $ 348,000 | $ 13,000 | $ 503,000 | $ (221,000) |
Deferred Revenue | 3,100,000 |  | 3,100,000 |  | $ 1,200,000
Cash and Cash Equivalents, at Carrying Value, Total | 20,943,000 |  | 20,943,000 |  | 17,573,000
Capitalized software development costs |  |  |  |  |
Description of Business and Summary of Significant Accounting Policies [Line Items] |  |  |  |  |
Cost | 8,200,000 |  | 8,200,000 |  | 5,500,000
Capitalized software development cost - work in progress |  |  |  |  |
Description of Business and Summary of Significant Accounting Policies [Line Items] |  |  |  |  |
Cost | $ 400,000 |  | $ 400,000 |  | $ 1,400,000
Minimum | Capitalized software development costs |  |  |  |  |
Description of Business and Summary of Significant Accounting Policies [Line Items] |  |  |  |  |
Estimated useful lives |  |  | three |  |
Maximum | Capitalized software development costs |  |  |  |  |
Description of Business and Summary of Significant Accounting Policies [Line Items] |  |  |  |  |
Estimated useful lives |  |  | P10Y |  |

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