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STOCK-BASED COMPENSATION (Details) - USD ($) | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2025 | Mar. 31, 2025 | Sep. 30, 2024 | Mar. 31, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Jun. 30, 2025 | Dec. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Share-based Payment Arrangement, Expense |  |  |  |  |  | $ 9,165,000 | $ 8,277,000 |  |
Shares withheld for tax obligations, vesting of restricted stock |  |  | 24,745 |  | 33,381 |  |  |  |
Award Recipient Type Director [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Share-based Payment Arrangement, Expense |  | $ 211,000 |  | $ 211,000 |  | 609,000 | 554,000 |  |
Restricted stock [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Fair value of shares vested as of the vesting date |  |  |  |  |  | $ 10,819,000 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number |  | 89,386 |  |  |  | 89,386 |  | 75,136 | 89,173
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value (in dollars per share) |  | $ 174.98 |  |  |  | $ 174.98 |  | $ 176.23 | $ 160.76
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period | [1],[2] | 14,250 |  |  |  | 65,104 |  |  |
Grant date fair value of shares issued (in dollars per share) | [1],[2] | $ 168.36 |  |  |  | $ 183.22 |  |  |
Forfeited (in shares) |  | 0 |  |  |  | 0 |  |  |
Forfeited (per share) |  | $ 0 |  |  |  | $ 0 |  |  |
Vested (in shares) |  | 0 |  |  |  | (64,891) |  |  |
Vested (per share) |  | $ 0 |  |  |  | $ 163.70 |  |  |
Fair value of shares granted, as of the grant dates |  |  |  |  |  | $ 11,928,000 |  |  |
Restricted stock [Member] | Award Recipient Type Employee [Member] |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Share-based Payment Arrangement, Expense |  | $ 2,870,000 |  | 2,801,000 |  | 9,931,000 | 9,249,000 |  |
Stock-based compensation costs capitalized as development costs |  | $ 451,000 |  | $ 486,000 |  | $ 1,375,000 | $ 1,526,000 |  |
[1] | Does not include restricted shares subject to open performance periods. For the long-term equity compensation awards established in 2023 and 2024 and the long-term and annual equity compensation awards established in 2025, the number of shares to be earned depends on the satisfaction of performance-based or market-based conditions, which may range from zero to 155,875.
[2] | Includes restricted shares granted during the year without performance or market conditions. Also includes restricted shares granted in previous years, for long-term and annual equity compensation awards for the Company's executive officers, for which performance-based or market-based conditions have been satisfied and the resulting number of shares have been determined during the year.

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