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STOCK-BASED COMPENSATION (Details) | 12 Months Ended
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Dec. 31, 2024 USD ($) Integer $ / shares shares | Dec. 31, 2023 USD ($) Integer $ / shares shares | Dec. 31, 2022 USD ($) Integer $ / shares shares | Dec. 31, 2021 $ / shares shares
Stock Compensation Plan disclosure [Abstract] |  |  |  |  |
Stock-based compensation cost | $ |  | $ 10,476,000 | $ 8,965,000 | $ 8,292,000 |
Shares withheld to satisfy the tax obligations (in shares) |  | 33,381 | 31,254 | 34,251 |
Long-term equity compensation awards | Service Condition Only Awards [Member] | Executive Officer [Member] |  |  |  |  |
Stock Compensation Plan disclosure [Abstract] |  |  |  |  |
Share awards granted (in shares) |  | 8,436 | 9,583 | 5,830 | 7,801
Grant date fair value of shares issued (in dollars per share) | $ / shares |  | $ 179.17 | $ 165.83 | $ 193.54 | $ 138.93
Restricted Stock Activity [Roll Forward] |  |  |  |  |
Granted (in shares) |  | 8,436 | 9,583 | 5,830 | 7,801
Restricted stock activity [Abstract] |  |  |  |  |
Granted (in dollars per share) | $ / shares |  | $ 179.17 | $ 165.83 | $ 193.54 | $ 138.93
Vesting of shares schedule [Abstract] |  |  |  |  |
Grant date |  | Feb. 26, 2024 | Mar. 02, 2023 | Mar. 03, 2022 | Feb. 25, 2021
Annual equity compensation awards | Company Performance Awards [Member] | Executive Officer [Member] |  |  |  |  |
Stock Compensation Plan disclosure [Abstract] |  |  |  |  |
Grant date fair value of shares issued (in dollars per share) | $ / shares |  | $ 179.17 | $ 165.83 | $ 193.54 |
Restricted stock activity [Abstract] |  |  |  |  |
Granted (in dollars per share) | $ / shares |  | $ 179.17 | $ 165.83 | $ 193.54 |
Vesting of shares schedule [Abstract] |  |  |  |  |
Grant date |  | Feb. 26, 2024 | Mar. 02, 2023 | Mar. 03, 2022 |
Performance period |  | 1/1/24 - 12/31/24 | 1/1/23 - 12/31/23 | 1/1/22 - 12/31/22 |
Range of earnable shares - low end of range |  | 0 | 0 | 0 |
Range of earnable shares - high end of range |  | 18,548 | 21,438 | 13,289 |
Shares determined |  |  | 21,438 | 12,761 |
Shares determined | [1] | N/A (1) |  |  |
Annual equity compensation awards | Company Performance Awards [Member] | Executive Officer [Member] | End of the one-year performance period |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting rights percentage |  | 34.00% |  |  |
Vesting of shares schedule [Abstract] |  |  |  |  |
Vesting period |  | 1 year |  |  |
Annual equity compensation awards | Company Performance Awards [Member] | Executive Officer [Member] | Following two years after performance period |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting rights percentage |  | 33.00% |  |  |
Vesting of shares schedule [Abstract] |  |  |  |  |
Vesting period |  | 2 years |  |  |
Annual equity compensation awards | Individual performance awards [Member] | Executive Officer [Member] |  |  |  |  |
Stock Compensation Plan disclosure [Abstract] |  |  |  |  |
Grant date fair value of shares issued (in dollars per share) | $ / shares |  |  | $ 183.46 | $ 168.90 |
Restricted stock activity [Abstract] |  |  |  |  |
Granted (in dollars per share) | $ / shares |  |  | $ 183.46 | $ 168.90 |
Vesting of shares schedule [Abstract] |  |  |  |  |
Grant date |  |  | Feb. 14, 2024 | Feb. 15, 2023 |
Performance period |  | 1/1/24 - 12/31/24 | 1/1/23 - 12/31/23 | 1/1/22 - 12/31/22 |
Range of earnable shares - low end of range |  | 0 | 0 | 0 |
Range of earnable shares - high end of range |  | 5,652 | 5,358 | 3,323 |
Shares determined |  |  | 4,814 | 3,022 |
Shares determined | [2] | N/A (1) |  |  |
Grant date share price | [2] | N/A (1) |  |  |
Grant date | [2] | N/A (1) |  |  |
Annual equity compensation awards | Individual performance awards [Member] | Executive Officer [Member] | End of the one-year performance period |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting rights percentage |  | 34.00% |  |  |
Vesting of shares schedule [Abstract] |  |  |  |  |
Vesting period |  | 1 year |  |  |
Annual equity compensation awards | Individual performance awards [Member] | Executive Officer [Member] | Following two years after performance period |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting rights percentage |  | 33.00% |  |  |
Vesting of shares schedule [Abstract] |  |  |  |  |
Vesting period |  | 2 years |  |  |
Annual equity compensation awards | Service Condition Only Awards [Member] | Non Executive Officers [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting rights percentage |  | 20.00% |  |  |
Stock Compensation Plan disclosure [Abstract] |  |  |  |  |
Share awards granted (in shares) |  | 12,150 | 11,325 | 11,225 |
Grant date fair value of shares issued (in dollars per share) | $ / shares |  | $ 179.35 | $ 172.70 | $ 148.48 |
Restricted Stock Activity [Roll Forward] |  |  |  |  |
Granted (in shares) |  | 12,150 | 11,325 | 11,225 |
Restricted stock activity [Abstract] |  |  |  |  |
Granted (in dollars per share) | $ / shares |  | $ 179.35 | $ 172.70 | $ 148.48 |
Vesting of shares schedule [Abstract] |  |  |  |  |
Grant date |  | Aug. 05, 2024 | Jun. 20, 2023 | Jun. 20, 2022 |
Vesting period |  | 5 years |  |  |
Award Recipient Type Employee [Member] |  |  |  |  |
Stock Compensation Plan disclosure [Abstract] |  |  |  |  |
Share awards granted (in shares) | [3],[4] | 84,308 | 57,741 | 71,217 |
Restricted Stock Activity [Roll Forward] |  |  |  |  |
Unvested at beginning of year (in shares) |  | 80,282 | 96,708 | 106,056 |
Granted (in shares) | [3],[4] | 84,308 | 57,741 | 71,217 |
Forfeited (in shares) |  | (2,545) | (1,015) | 0 |
Vested (in shares) |  | (77,976) | (73,152) | (80,565) |
Unvested at end of year (in shares) |  | 84,069 | 80,282 | 96,708 | 106,056
Vesting of shares schedule [Abstract] |  |  |  |  |
Total Unvested Shares (in shares) |  | 84,069 | 80,282 | 96,708 | 106,056
Award Recipient Type Employee [Member] | Restricted Stock [Member] |  |  |  |  |
Stock Compensation Plan disclosure [Abstract] |  |  |  |  |
Stock-based compensation cost | $ |  | $ 11,729,000 | $ 11,013,000 | $ 10,236,000 |
Stock based compensation cost capitalized as development costs | $ |  | $ 2,017,000 | $ 2,812,000 | $ 2,510,000 |
Grant date fair value of shares issued (in dollars per share) | $ / shares | [3],[4] | $ 133.68 | $ 148.28 | $ 121.52 |
Compensation is recognized over a weighted average period (in years) |  | 2 years 9 months 18 days |  |  |
Shares withheld to satisfy the tax obligations (in shares) |  | 33,381 | 31,254 | 34,251 |
Fair value of shares granted | $ |  | $ 11,270,000 | $ 8,562,000 | $ 8,654,000 |
Fair value of shares vested as of the vesting date | $ |  | $ 14,324,000 | $ 11,304,000 | $ 17,124,000 |
Restricted Stock Activity [Roll Forward] |  |  |  |  |
Unvested at end of year (in shares) |  | 84,069 |  |  |
Restricted stock activity [Abstract] |  |  |  |  |
Unvested at beginning of year (in dollars per share) | $ / shares |  | $ 153.43 | $ 131.79 | $ 116.37 |
Granted (in dollars per share) | $ / shares | [3],[4] | 133.68 | 148.28 | 121.52 |
Forfeited (in dollars per share) | $ / shares |  | 156.45 | 144.79 | 0 |
Vested (in dollars per share) | $ / shares |  | 124.12 | 120.87 | 102.42 |
Unvested at end of year (in dollars per share) | $ / shares |  | $ 160.72 | $ 153.43 | $ 131.79 | $ 116.37
Vesting of shares schedule [Abstract] |  |  |  |  |
2025 |  | 41,306 |  |  |
2026 |  | 22,978 |  |  |
2027 |  | 10,809 |  |  |
2028 |  | 6,546 |  |  |
2029 |  | 2,430 |  |  |
Total Unvested Shares (in shares) |  | 84,069 |  |  |
Range of earnable shares - low end of range |  | 0 |  |  |
Range of earnable shares - high end of range |  | 135,501 |  |  |
Accrued dividends on unvested restricted stock | $ |  | $ 1,617,000 | $ 1,921,000 | $ 1,610,000 |
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount | $ |  | 4,425,000 |  |  |
Award Recipient Type Director [Member] |  |  |  |  |
Stock Compensation Plan disclosure [Abstract] |  |  |  |  |
Stock-based compensation cost | $ |  | $ 764,000 | $ 764,000 | $ 566,000 |
Share awards granted (in shares) |  | 5,040 | 4,134 | 5,696 |
Restricted Stock Activity [Roll Forward] |  |  |  |  |
Unvested at beginning of year (in shares) |  | 4,282 | 5,800 | 156 |
Granted (in shares) |  | 5,040 | 4,134 | 5,696 |
Forfeited (in shares) |  | 0 | 0 | 0 |
Vested (in shares) |  | (4,218) | (5,652) | (52) |
Unvested at end of year (in shares) |  | 5,104 | 4,282 | 5,800 | 156
Vesting of shares schedule [Abstract] |  |  |  |  |
Total Unvested Shares (in shares) |  | 5,104 | 4,282 | 5,800 | 156
Award Recipient Type Director [Member] | Restricted Stock [Member] |  |  |  |  |
Stock Compensation Plan disclosure [Abstract] |  |  |  |  |
Grant date fair value of shares issued (in dollars per share) | $ / shares |  | $ 160.87 | $ 159.79 | $ 159.00 |
Fair value of shares granted | $ |  | $ 811,000 | $ 661,000 | $ 906,000 |
Fair value of shares vested as of the vesting date | $ |  | $ 680,000 | $ 904,000 | $ 8,000 |
Restricted stock activity [Abstract] |  |  |  |  |
Unvested at beginning of year (in dollars per share) | $ / shares |  | $ 160.15 | $ 158.31 | $ 120.39 |
Granted (in dollars per share) | $ / shares |  | 160.87 | 159.79 | 159.00 |
Forfeited (in dollars per share) | $ / shares |  | 0 | 0 | 0 |
Vested (in dollars per share) | $ / shares |  | 159.58 | 158.00 | 120.39 |
Unvested at end of year (in dollars per share) | $ / shares |  | $ 161.33 | $ 160.15 | $ 158.31 | $ 120.39
Award Recipient Type Director [Member] | Annual restricted share awards |  |  |  |  |
Stock Compensation Plan disclosure [Abstract] |  |  |  |  |
Shares issued to directors (in shares) |  | 5,040 | 4,134 | 5,568 |
Equity Incentive Plan 2013 [Member] |  |  |  |  |
Stock Compensation Plan disclosure [Abstract] |  |  |  |  |
Authorized shares of common stock (in shares) |  | 2,000,000 |  |  |
Shares available for grant (in shares) |  |  |  | 1,422,437 |
Equity Incentive Plan 2023 |  |  |  |  |
Stock Compensation Plan disclosure [Abstract] |  |  |  |  |
Authorized shares of common stock (in shares) |  | 1,500,000 |  |  |
Shares available for grant (in shares) |  | 1,396,713 | 1,484,116 |  |
New Director Stock Awards to be Issued in Future Periods [Member] | Equity Incentive Plan 2023 | Award Recipient Type Director [Member] | Restricted Stock [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Share Based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vesting Rights (% vesting per year in future years) |  | 25.00% |  |  |
New Director Restricted Stock Award Amount to be Awarded in Future Periods | $ |  | $ 25,000 |  |  |
Vesting of shares schedule [Abstract] |  |  |  |  |
Number of years in total shareholder return performance period | Integer |  | 4 |  |  |
Annual retainer awards | Equity Incentive Plan 2023 | Award Recipient Type Director [Member] | Restricted Stock [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Annual Director Retainer Stock Award Amount | $ |  | $ 135,000 |  |  |
Three year period [Member] | Long-term equity compensation awards | Award Recipient Type Employee [Member] |  |  |  |  |
Vesting of shares schedule [Abstract] |  |  |  |  |
Valuation date |  | Feb. 26, 2024 | Mar. 02, 2023 | Mar. 03, 2022 |
Risk Free Interest Rate |  | 4.65% | 4.68% | 1.64% |
Expected Volatility Rate |  | 22.85% | 31.01% | 30.01% |
Expected Volatility Rate for Peer Group Companies, Minimum |  | 20.46% | 27.31% | 26.32% |
Expected Volatility Rate for Peer Group Companies, Maximum |  | 62.79% | 51.26% | 50.10% |
Expected dividend yield |  | 2.84% | 3.02% | 2.27% |
Number of simulation paths | Integer |  | 1,000,000 | 1,000,000 | 1,000,000 |
Grant date fair value | $ |  | $ 4,442,000 | $ 4,885,000 | $ 2,912,000 |
Three year period [Member] | Equity Incentive Plan 2013 [Member] | Restricted Stock [Member] | Service Condition Only Awards [Member] | Executive Officer [Member] | Rate for each of the following four years |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting rights percentage |  | 25.00% |  |  |
Three year period [Member] | Equity Incentive Plan 2013 [Member] | Long-term equity compensation awards | Shareholder Return Awards [Member] | Executive Officer [Member] |  |  |  |  |
Vesting of shares schedule [Abstract] |  |  |  |  |
Grant date |  | Feb. 26, 2024 | Mar. 02, 2023 | Mar. 03, 2022 | Feb. 25, 2021
Performance period |  | 1/1/24 - 12/31/26 | 1/1/23 - 12/31/25 | 1/1/22 - 12/31/24 | 1/1/21 - 12/31/23
Range of earnable shares - low end of range |  | 0 | 0 | 0 | 0
Range of earnable shares - high end of range |  | 39,364 | 44,725 | 27,212 | 36,400
Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other Than Options, number of shares determined (string) | [5] | N/A (1) | N/A (1) | N/A (1) |
Shares determined |  |  |  |  | 36,400
Three year period [Member] | Equity Incentive Plan 2013 [Member] | Long-term equity compensation awards | Shareholder Return Awards [Member] | Executive Officer [Member] | End of the three-year performance period |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting rights percentage |  | 75.00% |  |  |
Three year period [Member] | Equity Incentive Plan 2013 [Member] | Long-term equity compensation awards | Shareholder Return Awards [Member] | Executive Officer [Member] | Following year after performance period |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting rights percentage |  | 25.00% |  |  |
[1] | The performance conditions for this award have not yet been satisfied and the number of shares have not yet been determined.
[2] | For this award, the performance conditions and grant date criteria under ASC 718, Compensation - Stock Compensation, have not yet been satisfied and the date of grant and resulting number of shares have not yet been determined.
[3] | Does not include restricted shares subject to open performance periods. For the long-term equity compensation awards established in 2022 and 2023 and the long-term and annual equity compensation awards established in 2024, the number of shares depend on satisfaction of performance based or market based conditions, and the number of shares to be earned could range from zero to 135,501.
[4] | 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.
[5] | The market conditions for this award have not yet been satisfied and the number of shares have not yet been determined.

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