STOCK-BASED COMPENSATION (Details)		12 Months Ended
		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.