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Basis of Presentation and Summary of Significant Accounting Policies (Additional Information) (Details) | 12 Months Ended
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Dec. 31, 2021 USD ($) Segment | Dec. 31, 2020 USD ($) Segment | Dec. 31, 2019 USD ($)
Net foreign exchange gain losses | $ 0 | $ 0 | $ 0
Other-than-temporary impairment | 0 | 0 | 0
Unbilled accounts receivables | 32,300,000 | 17,600,000 |
Allowance for doubtful accounts | 0 | 0 | 0
Additions to doubtful accounts | 0 | 0 | 0
Write-offs against the allowance for doubtful accounts | 0 | 0 | 0
Impairment of deferred contract acquisition costs | 0 | 0 | 0
Gain (loss) on retirement of assets | 0 | 0 | 0
Impairment of long lived assets | 0 | 0 | 0
Advertisement cost | $ 26,700,000 | $ 10,900,000 | 8,400,000
Share based arrangement vesting period, years | 4 years |  |
Number of operating segment | Segment | 1 |  |
Number of reportable segment | Segment |  | 1 |
Capitalized Software Costs [Member] |  |  |
Capitalized software development costs | $ 0 |  |
Finite lived intangible assets useful life, years | 3 years |  |
Impairment of capitalized internal use software | $ 0 | $ 0 | $ 0
No Customer [Member] | Gross Account Receivable [Member] | Major Customers [Member] |  |  |
Percentage of Revenue | 10.00% | 10.00% |
No Customer [Member] | Revenue [Member] | Major Customers [Member] |  |  |
Percentage of Revenue | 10.00% | 10.00% | 10.00%
Performance Based Vesting Condition [Member] |  |  |
Share based arrangement vesting period, years | 4 years |  |

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- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 35 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848 + Details
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- Definition The valuation allowance as of the balance sheet date to reduce the gross amount of receivables to estimated net realizable value, which would be presented in parentheses on the face of the balance sheet. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5074-111524 + Details
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