Contract With Customer, Certification Period Prior To Test Completion

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- Definition

Contract With Customer, Number Of Users Per Subscription

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- Definition

Contract With Customer, Threshold Period To Take Exam For Bulk Purchase

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- Definition

Contract With Customer, Threshold To Take Exam

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- Definition

Number Of Sources Of Revenue

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- Definition

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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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Period in which remaining performance obligation is expected to be recognized as revenue, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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REVENUE - Narrative (Details)	12 Months Ended
REVENUE - Narrative (Details)	Dec. 31, 2024 revenueSource user	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Number of sources of revenue \| revenueSource	4
Number of users \| user	6
Number of hours to make certification decision (less than)	48 hours
Number of days to take exam	21 days
Expiration period to take exams (in years)	1 year
Maximum
Disaggregation of Revenue [Line Items]
Subscription period (in years)	1 year
Revenue from Contract with Customer Benchmark \| Geographic Concentration Risk \| United States
Disaggregation of Revenue [Line Items]
Concentration risk (in percent)	42.00%	45.00%	46.00%
Apple \| Revenue from Contract with Customer Benchmark \| Customer Concentration Risk
Disaggregation of Revenue [Line Items]
Concentration risk (in percent)	60.80%	58.50%	54.20%
Google \| Revenue from Contract with Customer Benchmark \| Customer Concentration Risk
Disaggregation of Revenue [Line Items]
Concentration risk (in percent)	23.40%	25.60%	28.10%
Stripe \| Revenue from Contract with Customer Benchmark \| Customer Concentration Risk
Disaggregation of Revenue [Line Items]
Concentration risk (in percent)	11.70%	12.10%