STOCK-BASED COMPENSATION (Details) - USD ($)		3 Months Ended
		Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Expense		$ 3,507,000	$ 2,784,000
Shares withheld for tax obligations		33,381	31,254
Award Recipient Type Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Expense		$ 171,000	$ 225,000
Restricted stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of shares vested as of the vesting date		$ 14,330,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other Than Options, Potential Grants in Future Period (minimum)		0
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other Than Options, Potential Grants in Future Period (maximum)		135,501
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number		77,644		84,564
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)		$ 157.27		$ 153.78
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	[1],[2]	71,088
Grant date fair value of shares issued (in dollars per share)	[1],[2]	$ 125.07
Forfeited (in shares)		0
Forfeited (per share)		$ 0
Vested (in shares)		(78,008)
Vested (per share)		$ 124.15
Fair value of shares granted, as of the grant dates		$ 8,891,000
Restricted stock [Member] | Award Recipient Type Employee [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Expense		3,976,000	3,252,000
Stock-based compensation costs capitalized as development costs		$ 640,000	$ 693,000

[1] Does not include the restricted shares that may be earned if the performance goals established in 2022 and 2023 for long-term performance and in 2024 for annual and long-term performance are achieved. Depending on the actual level of achievement of the goals at the end of the open performance periods, the number of shares earned could range from zero to 135,501.

[2] Includes shares granted in prior years for which performance conditions have been satisfied and the number of shares have been determined.