Accounting Policies - Additional Information (Details) $ in Millions	12 Months Ended
Dec. 31, 2023 USD ($) segment unit agency	Dec. 31, 2022 USD ($)	Dec. 31, 2021 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
Capitalized contract cost, amortization period	5 years
Commission expense	$ 46.8	$ 39.4	$ 32.4
Number of reporting units \| unit	1
Foreign currency transaction gains, net	$ 8.7	(6.1)	(3.7)
Severance costs	6.3	0.0	0.0
Advertising expenses	$ 4.2	$ 5.8	$ 4.4
Customer Concentration Risk \| Sales Revenue, Net \| Foreign Customers
Summary Of Significant Accounting Policies [Line Items]
Concentration risk percentage	35.80%	33.50%	34.00%
Customer Concentration Risk \| Sales Revenue, Net \| Government Agencies
Summary Of Significant Accounting Policies [Line Items]
Concentration risk percentage	21.30%	19.20%	19.60%
Customer Concentration Risk \| Sales Revenue, Net \| Federal Government Agencies
Summary Of Significant Accounting Policies [Line Items]
Concentration risk percentage	4.20%	4.50%	5.60%
Customer Concentration Risk \| Accounts Receivable \| Customer One
Summary Of Significant Accounting Policies [Line Items]
Concentration risk percentage	12.10%

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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.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amortization period of cost capitalized in obtaining or fulfilling contract with customer, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Amount, before tax, of realized and unrealized gain (loss) from foreign currency transaction.

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Amount of fees incurred for commissions on mutual funds and insurance products.

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment.

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Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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