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The increase in the number of authorized shares under the Plan.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount of cost capitalized for award under share-based payment arrangement.

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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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Amount of tax benefit from exercise of option under share-based payment arrangement.

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Amount of cash inflow from issuance of shares under share-based payment arrangement. Includes, but is not limited to, option exercised.

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Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the 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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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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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.

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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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No definition available.

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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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Number of fully vested and expected to vest options outstanding that can be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Number of shares issued under share-based payment arrangement.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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STOCK-BASED COMPENSATION (Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended		12 Months Ended
	May 31, 2017	May 31, 2010	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for purchase (in shares)			3,100,000
Dividend yield			0.00%	0.00%	0.00%
Share-based compensation expense recognized			$ 27,725	$ 36,210	$ 19,591
Intrinsic value, options exercised			4,000	11,100	8,700
Cash received from option exercises and employee stock purchase plan			5,500	6,800	5,200
Tax benefit realized from stock options exercised			600	2,200	1,700
Capitalized share-based compensation cost			$ 600	$ 500	$ 400
2003 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance (in shares)			14,700,000
Increase in authorized shares (in shares)	1,700,000	3,500,000
2000 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance (in shares)			4,000,000
2001 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance (in shares)			4,000,000
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance (in shares)			3,000,000
Shares available for purchase (in shares)			2,000,000
Shares issued (in shares)			20,780	16,948	18,284
ESPP proceeds received			$ 1,100	$ 1,100	$ 1,100
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			4 years
Share-based compensation expense recognized			$ 3,500	5,000	3,200
Total unrecognized compensation costs related to unvested awards			$ 3,500
Weighted-average period for cost recognition, in years			2 years
Employee Stock Option \| Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			1 year
Employee Stock Option \| Employee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period, in years			8 years
Employee Stock Option \| Directors and Certain Executive Officers \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period, in years			6 years
Employee Stock Option \| Directors and Certain Executive Officers \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period, in years			10 years
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			3 years
Restricted Stock, Performance Stock and Contract Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense recognized			$ 24,300	31,200	16,400
Total unrecognized compensation costs related to unvested awards			$ 29,700
Weighted-average period for cost recognition, in years			2 years
Fair value of shares vested			$ 65,000	$ 15,700	$ 17,300
Requisite service periods of performance stock, restricted stock and contract stock awards, in years			3 years
Performance Shares Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested or expected to vest at end of year (in shares)			129,399