STOCK-BASED AWARDS (Narrative) (Details) $ / shares in Units, $ in Millions	3 Months Ended
Mar. 31, 2022 USD ($) ShareBasedCompensationPlan $ / shares shares	Mar. 31, 2021 USD ($) $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average period of recognition, unvested stock options	3 years
Number of stock plans \| ShareBasedCompensationPlan	2
Class A reserved under the 2012 Equity Incentive Plan	3,247,276
Class A number of shares available for grant under the 2012 Equity Incentive Plan	1,333,253
Intrinsic value of stock options exercised \| $	$ 4.7	$ 10.1
Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	4 years
Unrecognized compensation expense, unvested stock options \| $	$ 78.8
Maximum contractual term	10 years
Weighted average grant date fair value per share \| $ / shares	$ 20.48	$ 19.26
2012 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Base number of shares that may be issuable under stock plan	3,076,923
2012 Plan [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized	10,769,230
Annual percentage limit for incremental shares that may be issued	3.00%
2021 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Base number of shares that may be issuable under stock plan	2,000,000
2021 Plan [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Base number of shares that may be issuable under stock plan	2,000,000

Annual percentage limit for incremental shares that may be issued

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Base number of shares that may be issuable under stock plan

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Maximum contractual term

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Number of stock plans

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Aggregate number of common shares reserved for future issuance.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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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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Number of shares authorized for issuance under share-based payment arrangement.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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