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INCOME TAXES (Income Tax Rate Reconciliation) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Differences between total income tax expense and the amount computed by applying the statutory federal income tax rate to income before income taxes |  |  |
Statutory rate applied to pre-tax income | $ 124,492 | $ 68,250 | $ 55,448
State and local income taxes, net of federal tax benefit | 12,904 | 4,005 | 6,148
Excess tax benefits resulting from exercises of stock-based compensation | (2,500) | (4,681) | (2,471)
Resolution and settlements to uncertain tax positions | (350) | 577 | (4,146)
Foreign Derived Intangible Income Deduction | (13,356) | (2,197) | (1,267)
Foreign rate variance | 5,020 | 2,131 | 85
Valuation allowances | (4,547) | (4,209) | 4,753
Research and development credit | (6,800) | (5,300) | (4,400)
Pension plan termination adjustment | 0 | (14,711) | 0
U.S. tax cost (benefit) of foreign source income | 783 | 3,488 | 269
Other | 4,957 | 1,065 | 3,477
Total | $ 120,603 | $ 48,418 | $ 57,896
Effective tax rate | 20.30% | 14.90% | 21.90%
Total income tax payments, net of refunds | $ 151,818 | $ 87,288 | $ 59,360

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