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Summary of Significant Accounting Policies - Additional Information (Details) - USD ($) | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2019 | Dec. 31, 2019 | Sep. 30, 2020
Description of Business and Summary of Significant Accounting Policies [Line Items] |  |  |  |
Deferred Revenue |  |  | $ 1,100,000 | $ 1,100,000
Error corrections |  |  |  |
Description of Business and Summary of Significant Accounting Policies [Line Items] |  |  |  |
Increase in expenses | $ 8,000 | $ 49,000 |  |
Increase in liabilities |  |  | 528,000 |
Decrease in retained earnings |  |  | (777,000) |
Decrease in total assets |  |  | (249,000) |
Decrease in cash flows provided by operating activities |  | (38,000) |  |
Decrease in cash flows used in investing activities |  | (79,000) |  |
Increase in cash flows used in financing activities |  | $ 41,000 |  |
Accounts receivable |  |  |  |
Description of Business and Summary of Significant Accounting Policies [Line Items] |  |  |  |
Unbilled receivables |  |  | $ 500,000 | $ 400,000

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- Definition Amount of deferred income and obligation to transfer product and service to customer for which consideration has been received or is receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(5)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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