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STOCK-BASED COMPENSATION - Schedule of Option Activity (Details) - Options - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Stock Awards Plans |  |
Assumptions used to estimate fair value of stock options granted |  |
Dividend yield assumption | 1.28% | 1.41%
Expected Stock Price Volatility | 17.03% | 16.55%
Risk-free interest rate | 4.51% | 3.57%
Expected Life of Option (years) | 7 years | 7 years
Stock options activity |  |
Outstanding at the beginning of the period (in shares) | 2,182,784 |
Granted (in shares) | 249,663 |
Exercised (in shares) | (299,595) |
Forfeited or expired (in shares) | (4,716) |
Outstanding at the end of the period (in shares) | 2,128,136 |
Stock option weighted average exercise price |  |
Outstanding at the beginning of the period (in dollars per share) | $ 80.63 |
Options granted, Weighted average exercise price (in dollars per share) | 141.00 |
Options exercised, Weighted average exercise price (in dollars per share) | 70.69 |
Options forfeited or expired, Weighted average exercise price (in dollars per share) | 90.72 |
Outstanding at the end of the period (in dollars per share) | $ 89.09 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] |  |
Options exercisable, Number of options (in shares) | 1,671,615 |
Options exercisable, Weighted average exercise price (in dollars per share) | $ 77.98 |
Options outstanding, Weighted average remaining contractual term (in years) | 4 years 3 months 18 days |
Options exercisable, Weighted average remaining contractual term (in years) | 2 years 10 months 24 days |
Options outstanding, Aggregate intrinsic value | $ 116,617 |
Options exercisable, Aggregate intrinsic value | 110,182 |
Options exercised, Intrinsic value, at end of period | $ 19,529 | $ 10,118
Director Stock Option Plans |  |
Stock options activity |  |
Outstanding at the beginning of the period (in shares) | 19,000 |
Granted (in shares) | 0 |
Exercised (in shares) | (19,000) |
Forfeited or expired (in shares) | 0 |
Outstanding at the end of the period (in shares) | 0 |
Stock option weighted average exercise price |  |
Outstanding at the beginning of the period (in dollars per share) | $ 66.59 |
Options granted, Weighted average exercise price (in dollars per share) | 0 |
Options exercised, Weighted average exercise price (in dollars per share) | 66.59 |
Options forfeited or expired, Weighted average exercise price (in dollars per share) | 0 |
Outstanding at the end of the period (in dollars per share) | $ 0 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] |  |
Options exercisable, Number of options (in shares) | 0 |
Options exercisable, Weighted average exercise price (in dollars per share) | $ 0 |
Options outstanding, Weighted average remaining contractual term (in years) | 0 years |
Options exercisable, Weighted average remaining contractual term (in years) | 0 years |
Options outstanding, Aggregate intrinsic value | $ 0 |
Options exercisable, Aggregate intrinsic value | 0 |
Options exercised, Intrinsic value, at end of period | $ 1,394 | $ 218

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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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iv) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition Weighted average price of options that were either forfeited or expired. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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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://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2)(i) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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