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STOCK-BASED COMPENSATION (Tables)

9 Months Ended

Sep. 30, 2023

Share-Based Payment Arrangement [Abstract]

Schedule of Restricted Stock Activity

The following tables summarizes activity for the nine months September 30, 2023 and 2022:

			Number of Unvested Restricted Stock Units						Weighted Average Grant Date Fair Value						Number of Unvested Performance Vesting Restricted Stock Units						Weighted Average Grant Date Fair Value
Unvested shares as of January 1, 2023			197,772						$	77.49					190,804						$	52.15
Granted			43,415						77.84						68,726						56.57
Vested			(11,608)						70.86						—						—
Forfeited/canceled			(971)						87.68						(5,069)						47.67
Unvested shares as of March 31, 2023			228,608						$	77.85					254,461						$	53.43
Granted			55,041						94.53						15,094						66.66
Vested			(43,088)						86.28						—						—
Forfeited/canceled			(1,401)						89.08						(10,731)						50.69
Unvested shares as of June 30, 2023			239,160						$	80.10					258,824						$	54.32
Granted			6,319						109.82						—						—
Vested			(46,823)						67.17						—						—
Forfeited/canceled			(4,761)						92.93						(853)						47.67
Unvested shares as of September 30, 2023			193,895						$	83.88					257,971						$	54.34

			Number of Unvested Restricted Stock Units						Weighted Average Grant Date Fair Value						Number of Unvested Performance Vesting Restricted Stock Units						Weighted Average Grant Date Fair Value
Unvested shares as of January 1, 2022			198,413						$	66.04					153,138						$	48.54
Granted			2,154						73.83						—						—
Vested			(3,074)						65.75						—						—
Forfeited/canceled			(1,157)						66.89						—						—
Unvested shares as of March 31, 2022			196,336						$	67.16					153,138						$	48.54
Granted			76,038						97.55						37,666						66.82
Vested			(10,817)						63.53						—						—
Forfeited/canceled			(3,752)						75.70						—						—
Unvested shares as of June 30, 2022			257,805						$	75.37					190,804						$	52.15
Granted			—						—						—						—
Vested			(52,701)						66.18						—						—
Forfeited/canceled			(3,265)						85.36						—						—
Unvested shares as of September 30, 2022			201,839						$	77.60					190,804						$	52.15

Schedule of Grant Date Fair Value of Awards Granted

The table below summarizes the assumptions used in the Monte Carlo simulation to determine the grant date fair value of awards granted during the nine months ended September 30, 2023:

Grant date			January 24, 2023			March 3, 2023			April 3, 2023
Forecast period (years)			3			3			3
Risk-free interest rates			3.88%			4.64%			3.79%
Implied equity volatility			87.2%			86.4%			70.8%
Stock price on the date of grant			$72.99			$82.20			$79.50

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Tabular disclosure of share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-SubTopic 10
-Topic 718
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year.

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