SHARE-BASED COMPENSATION AND EMPLOYEE BENEFIT PLANS (Tables)

12 Months Ended

Dec. 31, 2023

Compensation Related Costs [Abstract]

Schedule of Performance Share Units

The following table summarizes information about performance share units for 2023:

	Shares	Weighted Average Grant Date  Fair Value
Non-vested at January 1, 2023	103,659	$	165.94
Granted	70,758	232.24
Vested	(47,802)	146.65
Forfeited or unearned	(26,552)	182.94
Non-vested at December 31, 2023	100,063	$	207.28

The weighted average grant-date fair value of performance share units and total fair value of performance share units vested are summarized in the following table:

	For the Year Ended December 31,
	2023		2022		2021
Weighted average grant-date fair value of performance share units granted	$	232.24	$	185.05	$	132.52
Total fair value of performance share units vested (in millions)	$	7.0	$	5.7	$	5.7

R

Schedule of Restricted Stock

The following table summarizes information about restricted share units for 2023:

	Shares	Weighted Average Grant Date  Fair Value
Non-vested at January 1, 2023	118,765	$	157.34
Granted	79,141	231.70
Vested	(80,738)	162.06
Forfeited	(8,374)	204.15
Non-vested at December 31, 2023	108,794	$	204.35

The weighted average grant-date fair value of restricted share units and total fair value of restricted share units vested are summarized in the following table:

	For the Year Ended December 31,
	2023		2022		2021
Weighted average grant-date fair value of restricted share units granted	$	231.70	$	184.67	$	150.38
Total fair value of restricted share units vested (in millions)	$	13.1	$	8.5	$	3.8

The following table summarizes information about restricted stock awards for 2023:

	Shares	Weighted Average Grant  Date Fair Value
Non-vested at January 1, 2023	5,067	$	69.08
Granted	—	—
Vested	(2,898)	69.01
Forfeited	—	—
Non-vested at December 31, 2023	2,169	$	69.18

The weighted average grant-date fair value of restricted stock awards and total fair value of restricted stock awards vested are summarized in the following table:

	For the Year Ended December 31,
	2023		2022		2021
Weighted average grant-date fair value of restricted stock granted	$	—	$	—	$	—
Total fair value of restricted stock awards vested (in millions)	$	0.2	$	2.3	$	8.6