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STOCK AWARD PLANS - Employee Stock Purchase Plan Activity (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares purchased by employees (shares)	52,157
Aggregate cost to employees	$ 4,153
Expense recognized by the company	29,161	$ 10,954	$ 53,150	$ 22,351
Company expense on ESPP discount
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expense recognized by the company	$ 733	$ 638	$ 1,807	$ 1,619

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- Definition

Total Employee cost of shares purchased during the period through the Employee Stock Purchase Plan.

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

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Number of shares issued during the period as a result of an employee stock purchase plan.

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