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Accounting Policies - Additional Information (Details) $ in Thousands | 12 Months Ended |
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Dec. 31, 2022 USD ($) segment agency unit | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Number of operating segments | segment | 1 |  |  |
Number of reportable segments | segment | 1 |  |  |
Number of government agencies | agency | 3 |  |  |
Allowance for doubtful accounts | $ 2,125 | $ 1,400 | $ 1,400 | $ 600
Capitalized contract cost, amortization period | 5 years |  |  |
Commission expense | $ 39,400 | 32,400 | 23,300 |
Number of reporting units | unit | 1 |  |  |
Foreign currency transaction gains (losses) | $ (6,100) | (3,700) | 4,300 |
Advertising expenses | $ 5,800 | $ 4,400 | $ 6,000 |
Sales Revenue, Net | Customer Concentration Risk | Foreign Customers |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Concentration risk percentage | 33.50% | 34.00% | 33.80% |
Sales Revenue, Net | Customer Concentration Risk | Government Agencies |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Concentration risk percentage | 19.20% | 19.60% | 18.10% |
Sales Revenue, Net | Customer Concentration Risk | Federal Government Agencies |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Concentration risk percentage | 4.50% | 5.60% | 6.60% |

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