STOCK-BASED COMPENSATION - Fair Value Assumptions (Details) - $ / shares	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Volatility	50.00%
Dividend yield	0.00%
Risk-free rate	1.10%
Expected term (in years)	10 years
Initial stock price (in USD per share)	$ 21.72
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Volatility	49.50%	41.30%	34.50%
Dividend yield	0.00%	0.00%	0.00%
Risk-free rate	1.10%	0.30%	1.80%
Expected term (in years)	5 years 7 months 6 days	5 years 3 months 18 days	6 years 10 months 24 days

Agreed-upon price for the exchange of the underlying asset relating to the share-based payment award.

No definition available.

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

+ References

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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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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.

+ References

No definition available.

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- Definition

Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(i)
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-Name Accounting Standards Codification
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-SubTopic 10
-Section S99
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